LTM8001 LINER | Alldatasheet
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For more information www.linear .com/8001 TYPICAL APPLICATION FEATURES DESCRIPTION 36VIN, 5A µModule Regulator with 5-Output Configurable LDO Array The LT M®8001 is a 36VIN, 5A step-down μModule® regu- lator with a 5-output configurable LDO array. Operating over an input voltage range of 6V to 36V , the L TM8001 buck regulator supports an output voltage range of 1.2V to 24V . Following the buck regulator is an array of five 1.1A linear regulators whose outputs may be connected in parallel to accommodate a wide variety of load combi- nations. Three of these LDOs are tied to the output of the buck regulator , while the other two are tied together to an undedicated input. The low profile package (3.42mm) enables utilization of unused space on the bottom of PC boards for high density point of load regulation. The L TM8001 is packaged in a thermally enhanced, compact (15mm × 15mm) and low profile (3.42mm) overmolded ball grid array (BGA) pack- age suitable for automated assembly by standard surface mount equipment. The L TM8001 is RoHS compliant.
APPLICATIONS
n Complete Step-Down Switch Mode Power Supply with Configurable Array of Five LDOs n Step-Down Switching Power Supply – Adjustable 10% Accurate Output Current Limit –Constant-Current, Constant-Voltage Operation – Wide Input Voltage Range: 6V to 36V – 1.2V to 24V Output Voltage n Configurable Output LDO Array – Five 1.1A Parallelable Outputs – Outputs Adjustable from 0V to 24V – Low Output Noise: 90μV RMS (10Hz to 1MHz) n 15mm × 15mm × 3.42mm Surface Mount n FPGA, DSP , ASIC and Microprocessor Supplies n Servers and Storage Devices n RF T ransceivers L, L T , L TC, L TM, µModule, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents, including 7199560, 7321203. 5A Output DC/DC µModule Converter 118k 350kHz VOUT5 SET5LDO 5FBO STEP-DOWN SWITCHING REGULATOR VOUT4 SET4LDO 4 VOUT3 SET3 BIAS123 BIAS45 COMP SS V REF ILIM SYNC LDO 3 19.6k RT GND 10µF VIN45 510k 3.3V VOUT2 SET2LDO 2 VOUT1 SET1 1.2V 1.1V 1.5A 0.9V 1.5A 1.8V VIN0 RUN VIN 6V TO 36V VOUT0 L TM8001 LDO 1 45.3k 4.7µF 4.7µF 2.2µF 54.9k 121k 470µF
8001 TA01
100µF
For more information www.linear .com/8001 ABSOLUTE MAXIMUM RATINGS (Note 1) ORDER INFORMATION PIN CONFIGURATION A B C D E F BGA PACKAGE 121 PADS (15mm × 15mm × 3.42mm) G H J K SS RUN FBO COMP SYNC V REF ILIM RT SET1 VIN0 BANK 1 L VOUT1 VOUT2VOUT3 TOP VIEW VOUT4 VOUT5 SET2 SET3SET4 GND BANK 2 SET5 BIAS45 VOUT0 BANK 4 BIAS123 VIN45 BANK 3 TJMAX = 125°C, θJA = 16.1°C/W , θJCbottom = 5.99°C/W , θJCtop = 13.4°C/W , θJB = 4.98°C/W θ VALUES DETERMINED PER JEDEC 51-9, 51-12 WEIGHT = 1.8 GRAMS LEAD FREE FINISH TRAY PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE (Note 3) L TM8001EY#PBF L TM8001EY#PBF L TM8001Y 121-Lead (15mm × 15mm × 3.42mm) BGA –40°C to 125°C L TM8001IY#PBF L TM8001IY#PBF L TM8001Y 121-Lead (15mm × 15mm × 3.42mm) BGA –40°C to 125°C Consult L TC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container . For more information on lead free part marking, go to: http://www.linear .com/leadfree/ This product is only offered in trays. For more information go to: http://www.linear .com/packaging/
For more information www.linear .com/8001 ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. RUN = 3V unless otherwise noted (Note 3). PARAMETER CONDITIONS MIN TYP MAX UNITS Buck Regulator Minimum VIN0 Input Voltage l 6 V VOUT0 Output DC Voltage 0A < IOUT ≤ 3A, RFB0 Open 0A < IOUT ≤ 3A; RFB0 = 536Ω 1.2 V V VOUT0 Output DC Current 6V < VIN0 < 36V , VOUT = 3.3V 0 5 A Quiescent Current Into VIN0 RUN = 0V No Load 0.1 µA mA V OUT0 Line Regulation 6V < VIN0 < 36V , IOUT = 4.5A ±0.5 % VOUT0 Load Regulation VIN0 = 24V , 0A < IOUT < 4.5A ±1.2 % VOUT0 RMS Voltage Ripple VIN0 = 24V , IOUT = 4.5A 10 mV Switching Frequency RT = 39.2k RT = 200k 1000 200 kHz kHz Voltage at FB0 Pin l 1.15 1.19 1.21 V Internal FBO Resistor 10 kΩ RUN Pin Current RUN = 1.45V 5.5 µA RUN Threshold Voltage (Falling) 1.49 1.61 V RUN Threshold Voltage (Rising) 1.63 1.75 V ILIM Control Range 0 1.5 V ILIM Pin Current 100 nA ILIM Current Limit Accuracy ILIM = 1.5V ILIM = 0.75V 5.1 2.5 6.4 3.4 A A V REF Voltage 0.5mA Load 1.9 2 2.1 V SS Pin Current 11 µA SYNC Input Low Threshold fSYNC = 500kHz 0.8 V SYNC Input High Threshold fSYNC = 500kHz 1.2 V SYNC Input Current SYNC = 0V SYNC = 2V –0.1 0.1 µA µA LDO Array SET1-5 Pin Current BIAS123 = BIAS45 = 2V , SETx = 0V , I OUT1-5 = 1mA l 9.85 9.80 10.15 10.20 µA µA V OUTx – SETx Offset Voltage BIAS123 = BIAS45 = 2V , SETx = 0V , IOUT1-5 = 1mA l –6.5 mV mV Line Regulation for SET Current 1V < V OUT0 = VIN45 < 22V , IOUTx = 1mA (Note 4) l 11 nA Line Regulation for VOUT1-5 1V < VOUT0 = VIN45 < 22V , IOUTx = 1mA (Note 4) 0.25 mV Load Regulation for SETx Current IOUT1-5 = 1mA to 1.1A 1 nA Load Regulation for VOUT1-5 IOUT1-5 = 1mA to 1.1A l mV mV Minimum Load Current for V OUT1-5 (Note 4) VOUT0 = VIN45 = BIAS123 = BIAS45 = 10V VOUT0 = VIN45 = BIAS123 = BIAS45 = 22V l l 500 µA mA BIAS123, BIAS45 Dropout Voltage IOUT1-5 = 100mA IOUT1-5 = 1.1A l 1.2 1.6 V V VOUT0 to VOUT1-3 and VIN45 to VOUT4-5 Dropout Voltage IOUT1-5 = 100mA IOUT1-5 = 1.1A l 100 500 mV mV
For more information www.linear .com/8001 TYPICAL PERFORMANCE CHARACTERISTICS Efficiency vs Output Current, VOUT0 = 2.5V Efficiency vs Output Current, V OUT0 = 3.3V Efficiency vs Output Current, V OUT0 = 5V (TA = 25°C unless otherwise noted. Configured per Table 1, where applicable.) ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. RUN = 3V unless otherwise noted (Note 3). PARAMETER CONDITIONS MIN TYP MAX UNITS Maximum VOUT0 to VOUT1-3 and VIN45 to VOUT4-5 Differential Voltage (Note 5) IOUT1-5 = 750mA IOUT1-5 = 310mA IOUT1-5 = 125mA V V V BIAS123, BIAS45 Pin Current I OUT1-5 = 100mA IOUT1-5 = 1.1A l mA mA V OUT1-5 Current Limit (Note 5) VOUT1-5 = 0V 1.3 A VOUT1-5 RMS Output Noise VOUT1-5 = 1V , IOUT1-5 = 1A, 100Hz to 1MHz 90 µVRMS Note 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime. Note 2: This μModule regulator includes overtemperature protection that is intended to protect the device during momentary overload conditions. Junction temperature will exceed 125°C when overtemperature protection is active. Continuous operation above the specified maximum operating junction temperature may impair device reliability. Note 3: The L TM8001E is guaranteed to meet performance specifications from 0°C to 125°C internal. Specifications over the full –40°C to 125°C internal operating temperature range are assured by design, characterization and correlation with statistical process controls. The L TM8001I is guaranteed to meet specifications over the full –40°C to 125°C internal operating temperature range. Note that the maximum internal temperature is determined by specific operating conditions in conjunction with board layout, the rated package thermal resistance and other environmental factors. Note 4: No minimum load is required if the respective linear regulator is off, such as when V OUT0 = 0V , VIN45 = 0V , BIAS123 = 0V or BIAS45 = 0V . Note 5: The current limit may decrease to zero at input-to-output differential voltages greater than 22V . Operation at voltages for V OUT0, VIN45, BIAS123 and BIAS45 is allowed up to a maximum of 36V as long as the difference between the linear regulator input and output voltage is below the specified differential voltage. Line and load regulation specifications are not applicable when the device is in current limit. VOUT0 CURRENT (A)
8001 G01
EFFICIENCY (%) VINO = 12V VINO = 24V VINO = 36V VOUT0 CURRENT (A)
8001 G02
EFFICIENCY (%) VINO = 12V VINO = 24V VINO = 36V VOUT0 CURRENT (A) 100
8001 G03
EFFICIENCY (%) VINO = 12V VINO = 24V VINO = 36V
For more information www.linear .com/8001 TYPICAL PERFORMANCE CHARACTERISTICS Efficiency vs Output Current, VOUT0 = 8V Efficiency vs Output Current, V OUT0 = 12V Efficiency vs Output Current, V OUT0 = 18V Efficiency vs Output Current, V OUT0 = 24V Input Current vs Output Current, V OUT0 = 2.5V Input Current vs Output Current, V OUT0 = 3.3V (TA = 25°C unless otherwise noted. Configured per Table 1, where applicable.) Input Current vs Output Current, V OUT0 = 5V Input Current vs Output Current, V OUT0 = 8V Input Current vs Output Current, V OUT0 = 12V VOUT0 CURRENT (A) 100
8001 G04
EFFICIENCY (%) VINO = 12V VINO = 24V VINO = 36V VOUT0 CURRENT (A) 100
8001 G05
EFFICIENCY (%) VINO = 24V VINO = 36V VOUT0 CURRENT (A) EFFICIENCY (%) 100
8001 G06
VINO = 28V VINO = 36V VOUT0 CURRENT (A) EFFICIENCY (%) 100
8001 G07
VINO = 28V VINO = 36V VOUT0 CURRENT (A) INPUT CURRENT (A) 0.9 1.2 1.5
8001 G08
0.6 0.3 1 2 3 5 VINO = 12V VINO = 24V VINO = 36V VOUT0 CURRENT (A) INPUT CURRENT (A) 0.2 0.6 0.8 1.0 2 4 5 1.8
8001 G09
0.4 1 3 1.2 1.4 1.6 VINO = 12V VINO = 24V VINO = 36V VOUT0 CURRENT (A) INPUT CURRENT (A) 1.5 2.0 2.5
8001 G10
1.0 0.5 1 2 3 5 VINO = 12V VINO = 24V VINO = 36V VOUT0 CURRENT (A) INPUT CURRENT (A) 1.5 2.0 2.5 3 5
8001 G11
1.0 0.5 1 2 4 3.0 3.5 4.0 VINO = 12V VINO = 24V VINO = 36V VOUT0 CURRENT (A) 2.0 2.5 3.0
8001 G12
1.5 1.0 1 2 3 5 0.5 INPUT CURRENT (A) VINO = 24V VINO = 36V
For more information www.linear .com/8001 TYPICAL PERFORMANCE CHARACTERISTICS Input Current vs Output Current, VOUT0 = 18V Input Current vs Output Current, V OUT0 = 24V Minimum VIN0 vs Output Current, VOUT0 = 3.3V and Below Minimum VIN0 vs Output Current, VOUT0 = 5V Minimum VIN0 vs Output Current, VOUT0 = 8V Minimum VIN0 vs Output Current, VOUT0 = 12V (TA = 25°C unless otherwise noted. Configured per Table 1, where applicable.) Minimum VIN0 vs Output Current, VOUT0 = 18V Minimum VIN0 vs Output Current, VOUT0 = 24V Output Voltage vs Output Current, V OUT0 = 2.5V VOUT0 CURRENT (A) INPUT CURRENT (A) 1.5 2.0 2.5 3 5
8001 G13
1.0 0.5 1 2 4 3.0 3.5 4.0 VINO = 28V VINO = 36V VOUT0 CURRENT (A) INPUT CURRENT (A) 3.0 4.0 5.0
8001 G14
2.0 1.0 2.5 3.5 4.5 1.5 0.5 1 2 3 5 VINO = 28V VINO = 36V VOUT0 CURRENT (A) 8001 G1 1 2 3 5 MINIMUM VIN0 VOLTAGE (V) VOUT0 CURRENT (A) 6.75 6.80
8001 G16
6.70 1 2 3 5
6.65 MINIMUM VIN0 VOLTAGE (V)
VOUT0 CURRENT (A) 9.80 9.85
8001 G17
9.75 1 2 3 5
9.70 MINIMUM VIN0 VOLTAGE (V)
VOUT0 CURRENT (A) 13.85 13.90 13.95
8001 G18
13.80 13.75 1 2 3 5 13.70
13.65 MINIMUM VIN0 VOLTAGE (V)
VOUT0 CURRENT (A) 19.69 19.70 19.71
8001 G19
19.68 19.67 1 2 3 5 19.66 19.65
19.64 MINIMUM VIN0 VOLTAGE (V)
VOUT0 CURRENT (A) MINIMUM VIN0 VOLTAGE (V) 25.70 26.00 26.05 26.10 2 4
8001 G20
25.60 25.90 25.80 25.65 25.95 25.55 25.85 25.75 1 3 5 LOAD CURRENT (A) –10 2.0 2.5 3.5
8001 G21
1.5 1.0 –5 0 10 0.5 3.0 OUTPUT VOLTAGE (V)
For more information www.linear .com/8001 TYPICAL PERFORMANCE CHARACTERISTICS ILIM Voltage vs Maximum IOUT0 Output Current VIN0 Input Current vs Voltage, VOUT0 Shorted Temperature Rise vs VOUT0 Current, Buck Regulator , VOUT0 = 3.3V Temperature Rise vs VOUT0 Current, Buck Regulator , VOUT0 = 5V Temperature Rise vs VOUT0 Current, Buck Regulator , VOUT0 = 2.5V Temperature Rise vs VOUT0 Current, Buck Regulator , VOUT0 = 8V (TA = 25°C unless otherwise noted. Configured per Table 1, where applicable.) Temperature Rise vs VOUT0 Current, Buck Regulator , VOUT0 = 12V Temperature Rise vs VOUT0 Current, Buck Regulator , VOUT0 = 18V Temperature Rise vs VOUT0 Current, Buck Regulator , VOUT0 = 24V ILIM VOLTAGE (V) 0.75 1.25
8001 G22
0.25 0.5 1 1.5 MAXIMUM CURRENT (A) VIN0 VOLTAGE (V) VIN0 INPUT CURRENT (mA) 100 200 300 400 600 6 12 18 24
8001 G23
VOUT0 CURRENT (A) TEMPERATURE RISE (°C) 1 2 3 4
8001 G24
VOUT0 CURRENT (A) TEMPERATURE RISE (°C) 1 2 3 4
8001 G25
VOUT0 CURRENT (A)
8001 G26
TEMPERATURE RISE (°C) 12VIN 24VIN 36VIN VOUT0 CURRENT (A) TEMPERATURE RISE (°C) 3 5
8001 G27
VOUT0 CURRENT (A) TEMPERATURE RISE (°C) 100
8001 G28
VOUT0 CURRENT (A) TEMPERATURE RISE (°C) 100 120 1 2 3 4
8001 G29
VOUT0 CURRENT (A) TEMPERATURE RISE (°C) 100
8001 G30
For more information www.linear .com/8001 TYPICAL PERFORMANCE CHARACTERISTICS LDO Input-to-Output Dropout Voltage vs Output Current LDO VBIAS-to-Output Dropout Voltage vs Output Current LDO Current Limit vs Input-to- Output Differential Voltage LDO Temperature Rise vs LDO Output Current (V IN = 24V , VOUT0 = 12V , 1 LDO Powered) LDO Temperature Rise vs LDO Output Current (V IN = 24V , VOUT0 = 12V , 5 LDOs in Parallel) (TA = 25°C unless otherwise noted. Configured per Table 1, where applicable.) LDO Input Voltage Ripple Rejection OUT4 = 2.5V , VIN45 = VBIAS45 = 4.5V) LDO Input Voltage Ripple Rejection OUT4 = 2.5V , VBIAS45 = 4.5V , VIN45 = 3.5V) OUTPUT CURRENT (mA) INPUT-TO-OUTPUT DROPOUT VOLTAGE (mV) 150 200 250 600 1000
8001 G31
OUTPUT CURRENT (mA) BIAS-TO-OUTPUT DROPOUT VOLTAGE (V) 1.40 1.42 1.44 600 1000
8001 G32
1.38 1.36 1.34 200 400 800 1.46 1.48 1.52 1.50 INPUT-TO-OUTPUT DIFFERENTIAL (V) LDO CURRENT LIMIT (mA) 800 1000 1200
8001 G33
LDO OUTPUT CURRENT (mA) TEMPERATURE RISE (°C) 120 500 1000
8001 G34
0.5V 1.6V 2.4V 9.5V 11.9V TOTAL LDO OUTPUT CURRENT (A) TEMPERATURE RISE (°C) 120 1 2 3 4
8001 G35
0.5V 0.9V 8.7V 11.9VFREQUENCY (Hz) RIPPLE REJECTION (dB) 100
8001 G36
ILOAD = 100mA ILOAD = 1.1A FREQUENCY (Hz) RIPPLE REJECTION (dB) 100
8001 G37
ILOAD = 100mA ILOAD = 1.1A
For more information www.linear .com/8001 PIN FUNCTIONS VIN0 (Bank 1): The V IN0 bank supplies current to the L TM8001’s internal regulator and to the internal power switches. This pin must be locally bypassed with an ex - ternal, low ESR capacitor; see Table 1 for recommended values. GND (Bank 2): Tie these GND pins to a local ground plane below the L TM8001 and the circuit components. In most applications, the bulk of the heat flow out of the L TM8001 is through these pads, so the printed circuit design has a large impact on the thermal performance of the part. See the PCB Layout and Thermal Considerations sections for more details. Return the feedback divider (R FB0) to this net. VIN45 (Bank 3): Input to the LDOs connected to VOUT4 and VOUT5. It must be locally bypassed with a low ESR capacitor . VOUT0 (Bank 4): Switching Power Converter Output Pins. Apply the output filter capacitor and the output load between these pins and the GND pins. In most cases, an output capacitance made up of a combination of ceramic and elec- trolytic capacitors yields the optimal volumetric solution. BIAS45 (Pin A8): This pin is the supply pin for the control circuitry of the LDOs connected to V OUT4 and VOUT5. For the LDOs to regulate, this voltage must be more than 1.2V to 1.6V greater than the output voltage (see Dropout specifications). BIAS123 (Pin B8): This pin is the supply pin for the control circuitry of the LDOs connected to V OUT1-VOUT3. For the LDOs to regulate, this voltage must be more than 1.2V to 1.6V greater than the output voltage (see Dropout specifications). SS (Pin K4): The Soft-Start Pin. Place an external capacitor to ground to limit the regulated current during start-up conditions. The soft-start pin has an 11μA charging current. SYNC (Pin K7): Frequency Synchronization Pin. This pin allows the switching frequency to be synchronized to an external clock. The R T resistor should be chosen to operate the internal clock at 20% slower than the SYNC pulse frequency. This pin should be grounded when not in use. Do not leave this pin floating. When laying out the board, avoid noise coupling to or from the SYNC trace. See the Switching Frequency Synchronization section in Applications Information. V REF (Pin K8): Buffered 2V Reference Capable of 0.5mA Drive. RUN (Pin L4): The RUN pin acts as an enable pin and turns on the internal circuitry. The pin does not have any pull up or pull down, requiring a voltage bias for normal part operation. The RUN pin is internally clamped, so it may be pulled up to a voltage source that is higher than TYPICAL PERFORMANCE CHARACTERISTICS (TA = 25°C unless otherwise noted. Configured per Table 1, where applicable.) LDO VBIAS Ripple Rejection (VOUT4 = 2.5V , VBIAS45 = 4.5V , VIN45 = 3.5V) LDO Output Ripple FREQUENCY (Hz) RIPPLE REJECTION (dB) 100
8001 G38
ILOAD = 100mA ILOAD = 1.1A 2µs/DIV VOUT = 1.2V AT 700mA COUT1 = 22µF CSET1 = 1nF VIN = 12V VOUT0 = 1.8V LOADED TO A TOTAL CURRENT OF 5A 100MHz BW
8001 G39
For more information www.linear .com/8001 BLOCK DIAGRAM CURRENT MODE CONTROLLER 2.2µH 10k0.2µF 2.2µF VIN0 RUN COMP ILIM VREF SYNC SS RSENSE VOUT0 VOUT1 SET1 INTERNAL REGULATORVIN0 GND RT FB0 BIAS123 BIAS45 V IN45 1.1A LDO VOUT2 SET21.1A LDO VOUT3 SET31.1A LDO VOUT4 SET41.1A LDO VOUT5 SET5 8001 BD 1.1A LDO the absolute maximum voltage rating of 6V through a resistor , provided the pin current does not exceed 100µA. FB0 (Pin L5): The L TM8001 regulates its FB0 pin to 1.19V . Connect the adjust resistor from this pin to ground. The value of RFB0 is given by the equation: RFBO = 11.9 VOUT –1.19 where RFB0 is in kΩ. COMP (Pin L6): Compensation Pin. This pin is generally not used. The L TM8001 is internally compensated, but some rare situations may arise that require a modifica - tion to the control loop. This pin connects directly to the input PWM comparator of the L TM8001. In most cases, no adjustment is necessary. If this function is not used, leave this pin open. RT (Pin L7): The RT pin is used to program the switch - ing frequency of the L TM8001 by connecting a resistor from this pin to ground. The Applications Information section of the data sheet includes a table to determine the recommended resistance value and switching frequency. When using the SYNC function, set the frequency to be 20% lower than the SYNC pulse frequency. Do not leave this pin open. ILIM (Pin L8): The ILIM pin reduces the maximum regulated output current of the L TM8001. The maximum control volt- age range is 1.5V . ILIM voltages above 1.5V have little or no effect. If this function is not used, tie this pin to V REF. SET1, SET2, SET3, SET4, SET5 (Pins L9, H11, G11, D11, A9): These pins set the regulation point for each LDO. A fixed current of 10μA flows out of this pin through a single external resistor , which programs the output voltage of the device. Output voltage range is zero to the absolute maximum rated output voltage. The transient performance can be improved by adding a small capacitor from the SET pin to ground. V OUT1 (Pins L10, L11), VOUT2 (Pins J11, K11), VOUT3 (Pins E11, F11), VOUT4 (Pins B11, C11), VOUT5 (Pins A10, A11): These are the power outputs of the individual LDOs. There must be a minimum load current of 1mA or the output may not regulate. The internal LDOs are rated for positive volt- ages between their inputs and outputs. Avoid applications where the internal LDOs can experience a negative voltage, even during start-up and turn-off transients PIN FUNCTIONS
For more information www.linear .com/8001 OPERATION The L TM8001 consists of two major parts: the first is a standalone nonisolated step-down switching DC/DC power converter that can deliver up to 5A of output current. The second part is an array of five parallelable 1.1A LDOs. The DC/DC converter provides a precisely regulated output voltage programmable via one external resistor from 1.2V to 24V . The input voltage range is 6V to 36V . Given that it is a step-down converter , make sure that the input volt- age is high enough to support the desired output voltage and load current. The linear regulator array consists of five low drop-out regulators, of which three inputs are dedicated to the buck converter’s output (V OUT0) and two tie to an undedicated input (VIN45). Each individual linear regulator may be set to a unique voltage through its SET pin, or may be paralleled with other LDOs by tying their respective SET and V OUT pins together . The L TM8001 step-down switching converter utilizes fixed frequency, average current mode control to accurately regulate the output current. This results in a constant- voltage, constant-current output characteristic, making the L TM8001’s step-down regulator well suited for many supercapacitor and battery charging applications. As shown in the Typical Performance Characteristics, the current limit works in both directions. The control loop will regulate the current in the internal inductor . Once the V OUT0 output has reached the regulation voltage determined by the resistor from the FBO pin to ground, the voltage regulation loop will reduce the output current and maintain the output voltage. The ILIM input may be used to set the maximum allowable current output of the L TM8001. The analog control range of the ILIM pin is from 0V to 1.5V . If the ILIM pin is raised above 1.5V , there is little or no effect. The RUN pin functions as a precision enable for the step- down switching converter connected to V OUT0. As the VOUT1-3 LDO inputs are tied to V OUT0, the RUN pin will also implicitly enable or disable these LDOs as well, unless some external power source is tied to V OUT0. Refer to the Applications Information section Shorted Input Protection if V OUT0 is forced above VIN0. When the voltage at the RUN pin is lower than 1.55V , switching is terminated. Below the turn-on threshold, the RUN pin sinks 5.5μA. This current can be used with a resistor between RUN and V IN0 to set hysteresis. Please refer to the UVLO and Shutdown section in the Applications Information for further details. During start-up, the SS pin is held low until the part is enabled, after which the capacitor at the soft-start pin is charged with an 11μA current source. The L TM8001 is equipped with thermal shutdown circuitry to protect the device during momentary overload condi - tions. It is set above the 125°C absolute maximum internal temperature rating to avoid interfering with normal speci- fied operation, so internal device temperatures will exceed the absolute maximum rating when the overtemperature protection is active. Thus, continuous or repeated activa- tion of the thermal shutdown may impair device reliability. During thermal shutdown, all switching is terminated and the SS pin is driven low. The switching frequency is determined by a resistor at the RT pin. The L TM8001 may also be synchronized to an external clock through the use of the SYNC pin. Please see the Switching Frequency Synchronization section in the Applications Information for further details. The V OUT1-5 linear regulators are easy to use and have all the protection features expected in high performance regulators. Included are short-circuit protection and safe operating area protection, as well as thermal shutdown. These linear regulators are especially well suited to ap - plications needing multiple rails. Their architecture allows their outputs to be adjusted down to zero volts. The output voltage is set by a single resistor , handling modern low voltage digital ICs as well as allowing easy parallel opera- tion and simplified thermal management. The linear regulators can be operated in two modes. One mode has the BIAS123 and BIAS45 pins connected to the linear regulator power input pins (V OUT0 and VIN45) which gives a limitation of about 1.6V dropout. In the other mode, the BIAS123 and BIAS45 pins can be tied to a voltage at least 1.6V above their highest respective outputs. The linear regulator power input (V OUT0 and VOUT45) can then be set to a lower voltage that meets the dropout requirement, minimizing the power dissipation.
For more information www.linear .com/8001 APPLICATIONS INFORMATION For most applications, the design process is straight forward, summarized as follows: 1. Look at Table 1 and find the row that has the desired input range and VOUT0 output voltage. 2. Apply the recommended CIN0, COUT0, RFB0 and RT val- ues. Note that ceramic and electrolytic capacitors are recommended. These are intended to work in concert to optimize performance and solution size; apply both capacitors. 3. Apply the set resistors for the V OUT1, VOUT2, VOUT3, VOUT4 and VOUT5 regulators. To set the voltage of each linear regulator , use the equation RSETX = VOUTX 10µA where the value of RSET is in Ohms. Note that there is no minimum positive output voltage for the regulator , but a minimum load current is required to maintain regulation regardless of output voltage, (please see Electrical Characteristics table). For true zero voltage output operation, this minimum load current must be returned to a negative supply voltage. If paralleling the linear regulators, set the output of each regulator to the same voltage by tying the SETx pins together and applying a single resistor . The value of the single set resistor is given by the equation: RSET = VOUT 10µA •n where n is the number of regulators paralleled. 4. Apply the output capacitors for the VOUT1, VOUT2, VOUT3, VOUT4 and VOUT5 regulators. A minimum output capaci- tor of 2.2μF with an ESR of 0.5Ω or less is recommended to prevent oscillations. While these component combinations have been tested for proper operation, it is incumbent upon the user to verify proper operation over the intended system’s line, load and environmental conditions. Bear in mind that the maximum output current is limited by junction temperature, the rela- tionship between the input and output voltage magnitude and other factors. Please refer to the graphs in the Typical Performance Characteristics section for guidance. The maximum frequency (and attendant R T value) at which the L TM8001 should be allowed to switch is given in Table 1 in the f MAX column, while the recommended frequency (and RT value) for optimal efficiency over the given input condition is given in the f OPTIMAL column. There are additional conditions that must be satisfied if the synchronization function is used. Please refer to the Switching Frequency Synchronization section for details. Capacitor Selection Considerations The C IN and C OUT capacitor values in Table 1 are the minimum recommended values for the associated oper- ating conditions. Applying capacitor values below those indicated in Table 1 is not recommended, and may result in undesirable operation. Using larger values is generally acceptable, and can yield improved dynamic response, if necessary. Again, it is incumbent upon the user to verify proper operation over the intended system’s line, load and environmental conditions. Ceramic capacitors are small, robust and have very low ESR. However , not all ceramic capacitors are suitable. X5R and X7R types are stable over temperature, applied voltage and give dependable service. Other types, including Y5V and Z5U have very large temperature and voltage coefficients of capacitance. In an application circuit they may have only a small fraction of their nominal capacitance result- ing in much higher output voltage ripple than expected. Many of the output capacitances given in Table 1 specify an electrolytic capacitor . Ceramic capacitors may also be used in the application, but it may be necessary to use more of them. Many high value ceramic capacitors have a large voltage coefficient, so the actual capacitance of the component at the desired operating voltage may be only a fraction of the specified value. Also, the very low ESR of ceramic capacitors may necessitate additional capacitors for acceptable stability margin. A final precaution regarding ceramic capacitors concerns the maximum input voltage rating of the L TM8001. A ceramic input capacitor combined with trace or cable inductance forms a high Q (under damped) tank circuit. If the L TM8001 circuit is plugged into a live supply, the input voltage can ring to twice its nominal value, possi - bly exceeding the device’s rating. This situation is easily avoided; see the Hot Plugging Safely section.
For more information www.linear .com/8001 APPLICATIONS INFORMATION L TM8001 Table 1: Recommended Component Values and Configuration for VOUT0 (TA = 25°C) VIN0 VOUT0 CIN0 COUT0 (CERAMIC) COUT0 (ELECTROL YTIC) RFB0 fOPTIMAL RT(OPTIMAL) fMAX RT(MIN) 6V to 36V 1.2V 10µF , 50V , 1210100µF , 6.3V , 1210470µF , 6.3V , 9mΩ, Chemi-Con, APXF6R3ARA471MH80G Open 200kHz 200k 250kHz 169k 6V to 36V 1.5V 10µF , 50V , 1210100µF , 6.3V , 1210470µF , 6.3V , 9mΩ, Chemi-Con, APXF6R3ARA471MH80G 38.3k 300kHz 140k 350kHz 118k 6V to 36V 1.8V 10µF , 50V , 1210100µF , 6.3V , 1210470µF , 6.3V , 9mΩ, Chemi-Con, APXF6R3ARA471MH80G 19.6k 350kHz 118k 400kHz 102k 7V to 36V 5V 10µF , 50V , 1210100µF , 6.3V , 1210120µF , 16V , 27mΩ, OS-CON, 16SVPC120M 3.09k 600kHz 68.1k 700kHz 57.6k 10V to 36V 8V 10µF , 50V , 1210 100µF , 10V , 1210120µF , 16V , 27mΩ, OS-CON, 16SVPC120M 1.74k 625kHz 64.9k 750kHz 53.6k 15V to 36V 12V 10µF , 50V , 1210 47µF , 16V , 1210 120µF , 16V , 27mΩ, OS-CON, 16SVPC120M 1.10k 650kHz 61.9k 800kHz 49.9k 22V to 36V 18V 10µF , 50V , 1210 22µF , 25V , 1210 47µF , 20V , 45mΩ, OS-CON, 20SVPS47M 715Ω 675kHz 59.0k 900kHz 44.2k 28V to 36V 24V 4.7µF , 50V , 1210 10µF , 50V , 1206 47µF , 35V , 30mΩ, OS-CON, 35SVPC47M 523Ω 700kHz 57.6k 1MHz 39.2k 9V to 15V 1.2V 10µF , 50V , 1210100µF , 6.3V , 1210470µF , 6.3V , 9mΩ, Chemi-Con, APXF6R3ARA471MH80G Open 200kHz 200k 525kHz 78.7k 9V to 15V 1.5V 10µF , 50V , 1210100µF , 6.3V , 1210470µF , 6.3V , 9mΩ, Chemi-Con, APXF6R3ARA471MH80G 38.3k 300kHz 140k 650kHz 61.9k 9V to 15V 1.8V 10µF , 50V , 1210100µF , 6.3V , 1210470µF , 6.3V , 9mΩ, Chemi-Con, APXF6R3ARA471MH80G 19.6k 350kHz 118k 800kHz 49.9k 9V to 15V 5V 10µF , 50V , 1210100µF , 6.3V , 1210120µF , 16V , 27mΩ, OS-CON, 16SVPC120M 3.09k 600kHz 68.1k 1MHz 39.2k 10V to 15V 8V 10µF , 50V , 1210 100µF , 10V , 1210120µF , 16V , 27mΩ, OS-CON, 16SVPC120M 1.74k 625kHz 64.9k 1MHz 39.2k 18V to 36V 1.2V 10µF , 50V , 1210100µF , 6.3V , 1210470µF , 6.3V , 9mΩ, Chemi-Con, APXF6R3ARA471MH80G Open 200kHz 200k 250kHz 169k 18V to 36V 1.5V 10µF , 50V , 1210100µF , 6.3V , 1210470µF , 6.3V , 9mΩ, Chemi-Con, APXF6R3ARA471MH80G 38.3k 300kHz 140k 350kHz 118k 18V to 36V 1.8V 10µF , 50V , 1210100µF , 6.3V , 1210470µF , 6.3V , 9mΩ, Chemi-Con, APXF6R3ARA471MH80G 19.6k 350kHz 118k 400kHz 102k 18V to 36V 5V 10µF , 50V , 1210100µF , 6.3V , 1210120µF , 16V , 27mΩ, OS-CON, 16SVPC120M 3.09k 600kHz 68.1k 700kHz 57.6k 18V to 36V 8V 10µF , 50V , 1210 100µF , 10V , 1210120µF , 16V , 27mΩ, OS-CON, 16SVPC120M 1.74k 625kHz 64.9k 750kHz 53.6k 18V to 36V 12V 10µF , 50V , 1210 47µF , 16V , 1210 120µF , 16V , 27mΩ, OS-CON, 16SVPC120M 1.10k 650kHz 61.9k 800kHz 49.9k Note: An input bulk capacitor is required.
ground. Do not leave this pin open under any condition. Table 2. RT Resistor Values and Their Resultant Switching ripple or too large of an output capacitor . the frequency determined by the resistor at the RT pin.
8001 F01
Figure 1. Setting the Output Current Limit, IMAX
rises, the ILIM voltage will decrease. active, possibly impairing the device’s reliability. ENA) as configured in Figure 4.
8001 F02ILIM
Figure 2. Load Current Derating vs where RFB0 is shown in Figure 3.
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Figure 3. Voltage Regulation and Overvoltage
The RUN pin has an absolute maximum voltage of 6V . L TM8001 is in turn delivered to its input power bus. use the energy, or the L TM8001’s input voltage will rise.
8001 F04
Figure 4. UVLO Configuration
For more information www.linear .com/8001 event. The SCR latches when the input voltage threshold is exceeded, so this circuit should be used with a fuse, as shown, or employ some other method to interrupt current from the load. As mentioned, the L TM8001 sinks current by energy conversion and not dissipation. Thus, no matter what protection circuit that is used, the amount of power that the protection circuit must absorb depends upon the amount of power at the input. For example, if the output voltage is 2.5V and can sink 5A, the input protection circuit should be designed to absorb at least 7.5W . In Figures 5a and 5b, let us say that the protection activation threshold is 30V . Then the circuit must be designed to be able to dissipate 7.5W and accept 7.5W/30V = 250mA. Figures 5a through 5c are crowbar circuits, which attempt to prevent the input voltage from rising above some level by clamping the input to GND through a power device. In some cases, it is possible to simply turn off the L TM8001 when the input voltage exceeds some threshold. This is possible when the voltage power source that drives current into V OUT never exceeds VIN. An example of this circuit is shown in Figure 5d. When the power source on the output drives V IN above a predetermined threshold, the comparator pulls down on the RUN pin and stops switching in the L TM8001. When this happens, the input capacitance needs to absorb the energy stored within the L TM8001’s internal inductor , resulting in an additional voltage rise. As shown in the Block Diagram, the internal APPLICATIONS INFORMATION VIN ZENER DIODE R Q
8001 F05a
8001 F05b
Q L TM8001 LOAD CURRENT GND VOUT0 SOURCING LOAD OPTIONAL HYSTERESIS RESISTOR VIN ZENER DIODESCR
8001 F05d
10µF L TM8001 LOAD CURRENT GND VOUT0 SOURCING LOAD EXTERNAL REFERENCE VOL TAGE Figure 5a. The MOSFET Q Dissipates Momentary Energy to GND. The Zener Diode and Resistor Are Chosen to Ensure That the MOSFET Turns On Above the Maximum VIN Voltage Under Normal Operation Figure 5b. The Comparator in This Circuit Activates the Q MOSFET at a More Precise Voltage Than the One Shown in Figure 5a. The Reference for the Comparator is Derived from the V REF Pin of the L TM8001 Figure 5c. The SCR Latches On When the Activation Threshold is Reached, So a Fuse or Some Other Method of Disconnecting the Load Should be Used Figure 5d. This Comparator Circuit Turns Off the L TM8001 if the Input Rises Above a Predetermined Threshold. When the L TM8001 Turns Off, the Energy Stored in the Internal Inductor Will Raise V IN a Small Amount Above the Threshold.
- Place the RSETx, RFB0 and RT resistors as close as pos-
sible to their respective pins.
- Place the CIN0 capacitor as close as possible to the VIN0
and GND connection of the L TM8001.
- Place the ceramic COUT0 capacitor as close as possible
as close as possible to the VOUTx pins.
- Place the C IN0 and C OUT0 capacitors such that their
- Connect all of the GND connections to as large a copper
components and the L TM8001.
- Use vias to connect the GND copper area to the board’s
vias than a board that uses larger holes. Figure 6. Layout Showing Suggested External Components,
8001 F06
damps the circuit and eliminates the voltage overshoot. though it may be physically large. is pulled low, the input current will drop to essentially zero. experience a negative voltage.
8001 F07
Figure 7. The Input Diode Prevents a Shorted Input from
For more information www.linear .com/8001 θJCtop: Thermal resistance from junction to top of the product case θJB: Thermal resistance from junction to the printed circuit board While the meaning of each of these coefficients may seem to be intuitive, JEDEC has defined each to avoid confusion and inconsistency. These definitions are given in JESD 51-12, and are quoted or paraphrased below: θ JA is the natural convection junction-to-ambient air thermal resistance measured in a one cubic foot sealed enclosure. This environment is sometimes referred to as “still air” although natural convection causes the air to move. This value is determined with the part mounted to a JESD 51-9 defined test board, which does not reflect an actual application or viable operating condition. θ JCbottom is the junction-to-board thermal resistance with all of the component power dissipation flowing through the bottom of the package. In the typical µModule regulator , the bulk of the heat flows out the bottom of the package, but there is always heat flow out into the ambient envi - ronment. As a result, this thermal resistance value may be useful for comparing packages but the test conditions don’t generally match the user’s application. θ JCtop is determined with nearly all of the component power dissipation flowing through the top of the package. As the electrical connections of the typical µModule regulator are on the bottom of the package, it is rare for an application to operate such that most of the heat flows from the junc- tion to the top of the part. As in the case of θ JCbottom, this value may be useful for comparing packages but the test conditions don’t generally match the user’s application. θ JB is the junction-to-board thermal resistance where almost all of the heat flows through the bottom of the µModule regulator and into the board, and is really the sum of the θ JCbottom and the thermal resistance of the bottom of the part through the solder joints and through a portion of the board. The board temperature is measured a specified distance from the package, using a two sided, two layer board. This board is described in JESD 51-9. Given these definitions, it should now be apparent that none of these thermal coefficients reflects an actual physical operating condition of a µModule regulator . Thus, none of them can be individually used to accurately predict the thermal performance of the product. Likewise, it would be inappropriate to attempt to use any one coefficient to correlate to the junction temperature vs load graphs given in this product’s data sheet. The only appropriate way to use the coefficients is when running a detailed thermal analysis, such as FEA, which considers all of the thermal resistances simultaneously. A graphical representation of these thermal resistances is Figure 8. The blue resistances are contained within the µModule regulator , and the green are outside. The die temperature of the L TM8001 must be lower than the maximum rating of 125°C, so care should be taken in the layout of the circuit to ensure good heat sinking of the L TM8001. The bulk of the heat flow out of the L TM8001 is through the bottom of the module and the BGA pads into the printed circuit board. Consequently a poor printed circuit board design can cause excessive heating, result- ing in impaired performance or reliability. Please refer to the PCB Layout section for printed circuit board design suggestions. APPLICATIONS INFORMATION
8001 F08
Figure 8. Thermal Resistances Among μModule Device Printed Circuit Board and Ambient Environment
For more information www.linear .com/8001 TYPICAL APPLICATIONS Five Output DC/DC µModule Regulator 68.1k 600kHz VOUT5 SET5LDO 5FBO STEP-DOWN SWITCHING REGULATOR VOUT4 SET4LDO 4 VOUT3 SET3 COMP SS V REF ILIM SYNC LDO 3 953/uni03A9 1.21M 2.2µFRTGND VIN45BIAS123BIAS45 510k10µF VOUT2 SET2LDO 2 VOUT1 SET1 12V1 300mA 12V2 300mA 47µF 120µF 12V3 300mA 12V4 300mA 12V5 300mA V IN0 RUN VIN 18V TO 36V VOUT0 (13.5V) L TM8001 LDO 1 1.21M 2.2µF 1.21M 2.2µF 1.21M 2.2µF 1.21M
8001 TA02
2.2µF
For more information www.linear .com/8001 TYPICAL APPLICATIONS Dual Input, 2.5V 5A DC/DC µModule Converter Using a Single L TM8001 (External 3.3V Turns On Before or Simultaneously with 12V) 82.5k VOUT5 SET5LDO 5FBO 500kHz STEP-DOWN SWITCHING REGULATOR VOUT4 SET4LDO 4 VOUT3 SET3 BIAS123 BIAS45 COMP SS V REF ILIM SYNC LDO 3 6.65k RT GND 10µF 10µF VIN45 510k VOUT2 SET2LDO 2 VOUT1 SET1 2.5V VIN0 RUN VIN 12V EXTERNAL 3.3V VOUT0 L TM8001 LDO 1 22µF 10nF 49.9k 470µF
8001 TA03
100µF
For more information www.linear .com/8001 TYPICAL APPLICATIONS Supercapacitor Charger and T wo Output Regulator 68.1k 3.09k VOUT5 SET5LDO 5FBO 600kHz STEP-DOWN SWITCHING REGULATOR VOUT4 SET4LDO 4 VOUT3 SET3 BIAS123 BIAS45 COMP SS V REF ILIM SYNC LDO 3 RT GND 10µF VIN45 200k 48.7k VOUT2 SET2LDO 2 VOUT1 SET1 2.5V 0.5A 3.3V VIN0 RUN VIN 9V TO 15V VOUT0 L TM8001 LDO 1 4.7µF 124k 10µF 110k 47µF
8001 TA04
1.5F 5V SUPERCAP PM-5ROV155-R
For more information www.linear .com/8001 Use T wo L TM8001s to Implement a 2.5VOUT 10A DC/DC µModule Converter TYPICAL APPLICATIONS 82.5k VOUT5 SET5LDO 5FBO 500kHz 500kHz STEP-DOWN SWITCHING REGULATOR VOUT4 SET4LDO 4 VOUT3 SET3 BIAS123 BIAS45 COMP SS V REF ILIM SYNC LDO 3 6.65k RT GND 10µF V IN45 510k VOUT2 SET2LDO 2 VOUT1 SET1 VIN0 RUN VIN1 12V VOUT0 L TM8001 LDO 1 22µF 24.9k 100µF
8001 TA05
470µF 2.5V 10A 82.5k VOUT5 SET5LDO 5FBO STEP-DOWN SWITCHING REGULATOR VOUT4 SET4LDO 4 VOUT3 SET3 BIAS123 BIAS45 COMP SS V REF ILIM SYNC LDO 3 6.65k RT GND VIN45 VOUT2 SET2LDO 2 VOUT1 SET1 VIN0 RUN VOUT0 L TM8001 LDO 1 100µF 470µF
For more information www.linear .com/8001 PACKAGE DESCRIPTION Please refer to http://www.linear .com/designtools/packaging/ for the most recent package drawings. PACKAGE TOP VIEW PIN “A1” CORNER Y X aaa Z aaa Z DETAIL A PACKAGE BOTTOM VIEW SEE NOTES L K J H G F E D C B A 1 2 38 9 10 11 4 5 6 7 PIN 1 121-Lead (15.00mm × 15.00mm × 3.42mm) (Reference LTC DWG# 05-08-1923 Rev Ø) NOTES: 1. DIMENSIONING AND TOLERANCING PER ASME Y14.5M-1994 2. ALL DIMENSIONS ARE IN MILLIMETERS BALL DESIGNATION PER JESD MS-028 AND JEP95 5. PRIMARY DATUM -Z- IS SEATING PLANE 6. SOLDER BALL COMPOSITION CAN BE 96.5% Sn/3.0% Ag/0.5% Cu OR Sn Pb EUTECTIC DETAILS OF PIN #1 IDENTIFIER ARE OPTIONAL, BUT MUST BE LOCATED WITHIN THE ZONE INDICATED. THE PIN #1 IDENTIFIER MAY BE EITHER A MOLD OR MARKED FEATURE DETAIL A Øb (121 PLACES) DETAIL B SUBSTRATE A ccc Z DETAIL B PACKAGE SIDE VIEW MOLD CAP Z M X Y Z ddd M Z eee SYMBOL A b D E e F G aaa bbb ccc ddd eee MIN 3.22 0.50 2.72 0.60 0.60 0.27 2.45 NOM 3.42 0.60 2.82 0.75 0.63 15.00 15.00 1.27 12.70 12.70 0.32 2.50 MAX 3.62 0.70 2.92 0.90 0.66 0.37 2.55 0.15 0.10 0.20 0.30 0.15 NOTES DIMENSIONS TOTAL NUMBER OF BALLS: 121 D E e b F G SUGGESTED PCB LAYOUT TOP VIEW 0.000 3.810 5.080 3.810 6.350 5.080 6.350 2.540 1.270 2.540 1.270 6.350 5.080 1.270 6.350 5.080 3.810 2.540 1.270 0.3175 0.3175 3.810 2.540 0.000 // bbb Z Z 0.635 ±0.025 Ø 121x L TMXXXXXX µModule BGA 121 0512 REV Ø TRAY PIN 1 BEVEL PACKAGE IN TRAY LOADING ORIENTATION COMPONENT PIN “A1”
Information furnished by Linear Technology Corporation is believed to be accurate and reliable. tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. Table 3. L TM8001 Pinout (Sorted by Pin Number)
For more information www.linear .com/8001 LINEAR TECHNOLOGY CORPORATION 2013 LT 0213 • PRINTED IN USA Linear Technology Corporation 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 ● FAX: (408) 434-0507 ● www.linear .com/8001 RELATED PARTS TYPICAL APPLICATION Three Output DC/DC µModule Converter 118k VOUT5 SET5LDO 5FBO 350kHz STEP-DOWN SWITCHING REGULATOR VOUT4 SET4LDO 4 VOUT3 SET3 BIAS123 BIAS45 COMP SS V REF ILIM SYNC LDO 3 19.6k RT GND 10µF 10k 20.5k VIN45 510k VOUT2 SET2LDO 2 VOUT1 SET1 2.2A 1.2V 1.3A 1.8V VIN0 RUN VIN 9V TO 18V VOUT0 L TM8001 LDO 1 60.4k 4.7µF 10µF 33.2k 470µF
8001 TA06
100µF PART NUMBER DESCRIPTION COMMENTS L TM8026 36VIN, 5A Step-Down µModule Regulator with Adjustable Current Limit 6V ≤ VIN ≤ 36V , 1.2V ≤ VOUT ≤ 24V , Adjustable Current Limit, Parallelable Outputs, CLK Input, 11.25mm × 15mm × 2.82mm LGA L TM8052 36VIN, ±5A Step-Down µModule Regulator with Adjustable Current Limit 6V ≤ VIN ≤ 36V , 1.2V ≤ VOUT ≤ 24V , –5V ≤ IOUT ≤ 5A, Adjustable Current Limit, CLK Input, 11.25mm × 15mm × 2.82mm LGA, Pin Compatible with L TM8026 L TM8061 32V , 2A Step-Down µModule Battery Charger with Programmable Input Current Limit Suitable for CC-CV Charging Single and Dual Cell Li-Ion or Li-Poly Batteries, 4.95V ≤ V IN ≤ 32V , C/10 or Adjustable Timer Charge Termination, NTC Resistor Monitor Input, 9mm × 15mm × 4.32mm LGA L TM8062A 32V , 2A Step-Down µModule Battery Charger with Integrated Maximum Peak Power T racking (MPPT) for Solar applications Suitable for CC-CV Charging Method Battery Chemistries (Li-Ion, Li-Poly, Lead-Acid, LiFePO 4), User Adjustable MPPT Servo Voltage, 4.95V ≤ VIN ≤ 32V , 3.3V ≤ VBATT ≤ 18.8V Adjustable, C/10 or Adjustable Timer Charge Termination, NTC Resistor Monitor Input, 9mm × 15mm × 4.32mm LGA L TM8033 36V , 3A EN55022 Class B Certified DC/DC Step-Down µModule Regulator 3.6V ≤ V IN ≤ 36V , 0.8V ≤ VOUT ≤ 24V , Synchronizable, 11.25mm × 15mm × 4.32mm LGA L TM4613 36VIN, 8A EN55022 Class B Certified DC/DC Step- Down µModule Regulator 5V ≤ VIN ≤ 36V , 3.3V ≤ VOUT ≤ 15V , PLL input, VOUT T racking and Margining, 15mm × 15mm × 4.32mm LGA L TM8048 1.5W , 725VDC Galvanically Isolated µModule Converter with LDO Post regulator 3.1V ≤ V IN ≤ 32V , 2.5V ≤ VOUT ≤ 12V , 1mVP-P Output Ripple, Internal Isolated T ransformer , 9mm × 11.25mm × 4.92mm BGA L TC2978 Octal Digital Power Supply Manager with EEPROM I2C/PMBus Interface, Configuration EEPROM, Fault Logging, 16-Bit ADC with ±0.25% TUE, 3.3V to 15V Operation L TC2974 Quad Digital Power Supply Manager with EEPROM I2C/PMBus Interface, Configuration EEPROM, Fault Logging, per Channel Voltage, Current and Temperature Measurements L TC3880 Dual Output PolyPhase Step-Down DC/DC Controller with Digital Power System Management I2C/PMBus Interface, Configuration EEPROM, Fault Logging, ±0.5% Output Voltage Accuracy, MOSFET Gate Drivers