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n Dual MOSFET Drivers in SO-8 Package or Single MOSFET Driver in MSOP Package n 1GW Electrical Isolation Between the Dual Drivers Permits High/Low Side Gate Drive n 1.5A Peak Output Current n 16ns Rise/Fall Times at VCC = 12V, CL = 1nF n Wide VCC Range: 4.5V to 13.2V n CMOS Compatible Inputs with Hysteresis, Input Thresholds are Independent of VCC n Driver Input Can Be Driven Above VCC n Undervoltage Lockout n Thermal Shutdown The LTC 1693 family drives power N-channel MOSFETs at high speed. The 1.5A peak output current reduces switching losses in MOSFETs with high gate capacitance. The LTC1693-1 contains two noninverting drivers while the LTC1693-2 contains one noninverting and one invert- ing driver. These dual drivers are electrically isolated and independent. The LTC1693-3 is a single driver with an output polarity select pin. All MOSFET drivers offer V CC independent CMOS input thresholds with 1.2V of typical hysteresis. They can level- shift the input logic signal up or down to the rail-to-rail V CC drive for the external MOSFET. The LTC1693 contains an undervoltage lockout circuit and a thermal shutdown circuit that disable the external N-channel MOSFET gate drive when activated. The LTC1693-1 and LTC1693-2 come in an 8-lead SO pack- age. The LTC1693-3 comes in an 8-lead MSOP package. n Power Supplies n High/Low Side Drivers n Motor/Relay Control n Line Drivers n Charge Pumps Two Transistor Forward Converter , LTC and LT are registered trademarks of Linear Technology Corporation. 12VIN BOOST TG TS SENSE+ SENSE– BG PHASE RUN/SHDN VFB R6 100Ω R7 100Ω BAT54 301k 5.1Ω R10 10k 8C15 0.1µF C14 3300pF C11 0.1µF C12 100pF 1µF 1µF 4700pF 25V 0.1µF 1.5µHT1 13:2 VOUT 1.5V/15A RETURN
1693 TA01
1µF C1: SANYO 63MV330GX C2: WIMA SMD4036/1.5/63/20/TR C6: KEMET T510X477M006AS (·8) L1: GOWANDA 50-318 T1: GOWANDA 50-319 1µF C10 0.1µF 1800pF NPO 12k 2.49k 12V RETURN V IN 48VDC –10% SYNC REF SL/ADJ C T IAVG SS V C VREF PGNDSGND LT1339 LTC1693CS8-2D2 MURS120 IN1 GND1 IN2 GND2 V CC1 OUT1 VCC2 OUT2 LTC1693CS8-2 IN1 GND1 IN2 GND2 V CC1 OUT1 VCC2 OUT2 MBRO530T1 MURS120 MTD20NO6HD MURS120 1.5µF 63V 330µF 63V MTD20NO6HD Si4420 0.068Ω Si4420
- 2 470µF 6.3V
- 8 249Ω 1.24k
ABSOLUTE MAXIMUM RATINGSW WW U Operating Ambient Temperature Range PACKAGE/ORDER INFORMATIONW UU ORDER PART NUMBER S8 PART MARKING LTC1693-1CS8 LTC1693-1IS8 16931 16931I TOP VIEW VCC1 OUT1 VCC2 OUT2 IN1 GND1 IN2 GND2 S8 PACKAGE 8-LEAD PLASTIC SO TJMAX = 150°C, qJA = 135°C/ W TOP VIEW VCC1 OUT1 VCC2 OUT2 IN1 GND1 IN2 GND2 S8 PACKAGE 8-LEAD PLASTIC SO TJMAX = 150°C, qJA = 135°C/ W ORDER PART NUMBER S8 PART MARKING LTC1693-2CS8 LTC1693-2IS8 16932 16932I IN NC PHASE GND V CC OUT NC NC TOP VIEW MS8 PACKAGE 8-LEAD PLASTIC MSOP TJMAX = 150°C, qJA = 200°C/ W ORDER PART NUMBER MS8 PART MARKING LTC1693-3CMS8 LTEB Consult factory for Industrial and Military grade parts. ELECTRICAL CHARACTERISTICSThe l denotes specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VCC = 12V, unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VCC Supply Voltage Range 4.5 13.2 V ICC Quiescent Current LTC1693-1, LTC1693-2, IN1 = IN2 = 0V (Note 2) l 400 720 1100 mA LTC1693-3, PHASE = 12V, IN = 0V l 200 360 550 mA ICC(SW) Switching Supply Current LTC1693-1, LTC1693-2, C OUT = 4.7nF, fIN = 100kHz l 14.4 20 mA LTC1693-3, COUT = 4.7nF, fIN = 100kHz l 7.2 10 mA Input VIH High Input Threshold l 2.2 2.6 3.1 V VIL Low Input Threshold l 1.1 1.4 1.7 V IIN Input Pin Bias Current l – 0.01 –10 mA VPH PHASE Pin High Input Threshold (Note 3) l 4.5 5.5 6.5 V IPH PHASE Pin Pull-Up Current PHASE = 0V (Note 3) l 10 20 45 mA Output VOH High Output Voltage I OUT = –10mA l 11.92 11.97 V VOL Low Output Voltage I OUT = 10mA l 30 75 mV RONL Output Pull-Down Resistance 2.85 W RONH Output Pull-Up Resistance 3.00 W IPKL Output Low Peak Current 1.70 A IPKH Output High Peak Current 1.40 A (Note 1)
ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Switching Timing (Note 4) tRISE Output Rise Time C OUT = 1nF l 17.5 35 ns COUT = 4.7nF l 48.0 85 ns tFALL Output Fall Time C OUT = 1nF l 16.5 35 ns COUT = 4.7nF l 42.0 75 ns tPLH Output Low-High Propagation Delay C OUT = 1nF l 38.0 70 ns COUT = 4.7nF l 40.0 75 ns tPHL Output High-Low Propagation Delay C OUT = 1nF l 32 70 ns COUT = 4.7nF l 35 75 ns Driver Isolation RISO GND1-GND2 Isolation Resistance LTC1693-1, LTC1693-2 GND1-to-GND2 Voltage = 75V l 0.075 1 G W Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Note 2: Supply current is the total current for both drivers. Note 3: Only the LTC1693-3 has a PHASE pin. Note 4: All AC timing specificatons are guaranteed by design and are not production tested. Note 5: Only applies to the LTC1693-1 and LTC1693-2. TYPICAL PERFOR A CE CHARACTERISTICS UW IN Threshold Voltage vs VCC TEMPERATURE (°C) –50 INPUT THRESHOLD HYSTERESIS (V) 1.2 1.3 1.4 25 75
1693 G03
1.1 1.0 –25 0 50 100 125 0.9 0.8 VCC = 12V VIH-VIL IN Threshold Hysteresis vs Temperature IN Threshold Voltage vs Temperature VCC (V) 2.00 2.25 2.75 81 0
1693 G01
1.75 1.50 67 91 1 1 2 1.25 1.00 2.50INPUT THRESHOLD VOLTAGE (V) VIH VIL TA = 25°C TEMPERATURE (°C) –50 INPUT THRESHOLD VOLTAGE (V) 2.75
1693 G02
2.00 1.50 –25 0 50 1.25 1.00 3.00 2.50 VIH VIL 2.25 1.75 75 100 125 VCC = 12V The l denotes specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VCC = 12V, unless otherwise noted.
TYPICAL PERFOR A CE CHARACTERISTICS UW PHASE Threshold Voltage vs VCC Rise/Fall Time vs VCC VCC (V) 81 0 tRISE tFALL
1693 G05
TIME (ns) TA = 25°C COUT = 1nF fIN = 100kHz Rise/Fall Time vs COUT Propagation Delay vs TemperaturePropagation Delay vs VCC Output Saturation Voltage vs TemperaturePropagation Delay vs COUT TEMPERATURE (°C) –55 OUTPUT SATURATION VOLTAGE (mV) 100 150 200 –35 –15 5 25
1693 G11
VOH (50mA) wrt VCC VOH (10mA) wrt VCC VOL (50mA) VOL (10mA) VCC = 12V Quiescent Current vs VCC (Single Driver) VCC (V) PHASE THRESHOLD VOLTAGE (V) 81 0
1693 G04
TA = 25°C VPH(H) VPH(L) TEMPERATURE (°C) –50 TIME (ns) 0 50 75
1693 G06
–25 25 100 125 VCC = 12V COUT = 1nF fIN = 100kHz tRISE tFALL Rise/Fall Time vs Temperature VCC (V) TIME (ns)
1693 G08
TA = 25°C COUT = 1nF fIN = 100kHz TEMPERATURE (°C) –50 TIME (ns) 25 75
1693 G09
–25 0 50 tPLH tPHL 100 125 VCC = 12V COUT = 1nF fIN = 100kHz COUT (pF) TIME (ns) 1 100 1000 10000
1693 G10
TA = 25°C VCC = 12V fIN = 100kHz tPLH tPHL VCC (V)
100 QUIESCENT CURRENT (µA)
1693 G12
TA = 25°C VIN = 0V COUT (pF) TIME (ns) 100 1 100 1000 10000
1693 G07
TA = 25°C VCC = 12V fIN = 100kHz tRISE tFALL
TYPICAL PERFOR A CE CHARACTERISTICS UW Switching Supply Current vs COUT (Single Driver) VOH vs Output Current COUT (pF) SWITCHING SUPPLY CURRENT (mA) 100 1 100 1000 10000
1693 G13
TA = 25°C VCC = 12V OUTPUT CURRENT (mA) VOH (mV) 150 200 250 350 10 50 70
1693 G15
TA = 25°C VCC = 12V VOL vs Output Current OUTPUT CURRENT (mA) VOL (mV) 100 200 300 150 250 20 40 60 80
1693 G14
VCC = 12V TA = 25°C VOL AMBIENT TEMPERATURE (°C) –55 POWER DISSIPATION (mW) 200 600 800 1000 65 85 105 1400
1693 G16
–35 –15 5 25 45 125 1200 TJ = 125°C LTC1693-3 LTC1693-1/LTC1693-2 Thermal Derating Curves
IN1, IN2 (Pins 1, 3): Driver Inputs. The inputs have VCC independent thresholds with 1.2V typical hysteresis to improve noise immunity. GND1, GND2 (Pins 2, 4): Driver Grounds. Connect to a low impedance ground. The VCC bypass capacitor should connect directly to this pin. The source of the external MOSFET should also connect directly to the ground pin. This minimizes the AC current path and improves signal integrity. The ground pins should not be tied together if isolation is required between the two drivers of the LTC1693-1 and the LTC1693-2. OUT 1, OUT2 (Pins 5, 7): Driver Outputs. The LTC1693- 1’s outputs are in phase with their respective inputs (IN1, IN2). The LTC1693-2’s topside driver output (OUT1) is in phase with its input (IN1) and the bottom side driver’s output (OUT2) is opposite in phase with respect to its input pin (IN2). V CC1, VCC2 (Pins 6, 8): Power Supply Inputs. IN (Pin 1): Driver Input. The input has VCC independent thresholds with hysteresis to improve noise immunity. NC (Pins 2, 5, 6): No Connect. PHASE (Pin 3): Output Polarity Select. Connect this pin to VCC or leave it floating for noninverting operation. Ground this pin for inverting operation. The typical PHASE pin input current when pulled low is 20mA. GND (Pin 4): Driver Ground. Connect to a low impedance ground. The VCC bypass capacitor should connect directly to this pin. The source of the external MOSFET should also connect directly to the ground pin. This minimizes the AC current path and improves signal integrity. OUT (Pin 7): Driver Output. V CC (Pin 8): Power Supply Input. VCC1 LTC1693-1 DUAL NONINVERTING DRIVER OUT1IN1 GND1 VCC2 OUT2IN2 GND2 VCC LTC1693-3 SINGLE DRIVER WITH POLARITY SELECT OUTIN GND NC6 2 NC 1693 BD PHASE NC VCC1 LTC1693-2 TOPSIDE NONINVERTING DRIVER AND BOTTOM SIDE INVERTING DRIVER OUT1IN1 GND1 VCC2 OUT2IN2 GND2 BLOCK DIAGRA SMW
4.7nF 12V 75V 12VP-P 1/2 LTC1693-1 OR 1/2 LTC1693-2 4.7µF 0.1mF
1693 TC03
4.7nF 87V 1/2 LTC1693-1 OR 1/2 LTC1693-2 4.7µF 0.1mF 75V High Side Switching Test LTC1693-1, LTC1693-2 Ground Isolation Test OUT1 VCC1 IN1 GND1 OUT2 VCC2 IN275V
1693 TC02
tRISE/FALL < 10ns 1nF OR 4.7nF 4.7mF 0.1 mF
1693 TC01
VCC = 12V AC Parameter Measurements VIH 90% 10% 90% 10% tr tf INPUT NONINVERTING OUTPUT INVERTING OUTPUT INPUT RISE/FALL TIME <10ns VIL tf tPLH tPHL tPLH 1693 TD tr tPHL
supplies, such as 18V, to reduce the gate charge losses. efficiency, using very little board space. the second driver being powered with respect to ground. gate overdrive voltage (VGS – VT).
1693 F01
Figure 1. Capacitance Seen by OUT During Switching the gate high, turning the MOSFET back on. short enough to not prolong their rise and fall times.
recirculate to the primary side of the circuit. The LTC1693 consumes very little current during standby. output varies with its VGS voltage level during switching. Figure 2. Simplified LTC1693-2 Floating Driver Application Figure 3. Simplified LTC1693-1 Application
1693 F03
1693 F02
corresponding to MOSFET’s VGS value (VCC in this case) can be readily obtained from the manafacturer’s QGS vs VGS curves: Load Capacitive Power (MOS) = (VCC)(QG)(f) Transition state power losses are due to both AC currents required to charge and discharge the drivers’ internal nodal capacitances and cross-conduction currents in the internal gates. UVLO and Thermal Shutdown The LTC1693’s UVLO detector disables the input buffer and pulls the output pin to ground if V CC < 4V. The output remains off from VCC = 1V to VCC = 4V. This ensures that during start-up or improper supply voltage values, the LTC1693 will keep the output power MOSFET off. The LTC1693 also has a thermal detector that similarly disables the input buffer and grounds the output pin if junction temperature exceeds 145 °C. The thermal shut- down circuit has 20 °C of hysteresis. This thermal limit helps to shut down the system should a fault condition occur. Input Voltage Range LTC1693’s input pin is a high impedance node and essen- tially draws neligible input current. This simplifies the input drive circuitry required for the input. The LTC1693 typically has 1.2V of hysteresis between its low and high input thresholds. This increases the driver’s robustness against any ground bounce noises. However, care should still be taken to keep this pin from any noise pickup, especially in high frequency switching applications. In applications where the input signal swings below the GND pin potential, the input pin voltage must be clamped to prevent the LTC1693’s parastic substrate diode from turning on. This can be accomplished by connecting a series current limiting resistor R1 and a shunting Schottky diode D1 to the input pin (Figure 4). R1 ranges from 100W to 470W while D1 can be a BAT54 or 1N5818/9. VCC INR1 GND LTC1693 INPUT SIGNAL GOING BEL0W GND PIN POTENTIAL PARASITIC SUBSTRATE DIODE
1693 F04
LTC1693 requires proper VCC bypassing and grounding due to its high speed switching (ns) and large AC currents (A). Careless component placement and PCB trace routing may cause excessive ringing and under/overshoot. To obtain the optimum performance from the LTC1693: A. Mount the bypass capacitors as close as possible to the V CC and GND pins. The leads should be shortened as much as possible to reduce lead inductance. It is recommended to have a 0.1mF ceramic in parallel with a low ESR 4.7mF bypass capacitor. For high voltage switching in an inductive environment, ensure that the bypass capacitors’ V MAX ratings are high enough to prevent breakdown. This is especially important for floating driver applications. B. Use a low inductance, low impedance ground plane to reduce any ground drop and stray capacitance. Re- member that the LTC1693 switches 1.5A peak currents and any significant ground drop will degrade signal integrity. C. Plan the ground routing carefully. Know where the large load switching current is coming from and going to. Maintain separate ground return paths for the input pin and output pin. Terminate these two ground traces only at the GND pin of the driver (STAR network). D. Keep the copper trace between the driver output pin and the load short and wide. Figure 4 APPLICATIONS INFORMATIONWU UU
V IN CT ITH SENSE– BDRIVE PGND LB OUT LBIN SGND SHDN V FB SENSE+ LTC1266A IN1 GND1 IN2 GND2 V CC1 OUT1 VCC2 OUT2 LTC1693-2 1nF 1nF 50V C10 0.1µF 50V C13 10nF 100V C11 0.1µF 100V C12 0.1µF X7R T1A 9.2µH 9T 4· #26 T1B 123µH 33T #30 T1C 33T #30 T1D 33T #30 T1E NOT USED 2 6 C12 1nF 0.1µF 25V C IN2 330µF 6.3V +V1 VIN GND 0.1µF C11 120pF NPO 43k 10k RF1 2.49k 0.010Ω 100Ω 4.99k –70V 200mA –24V 240mA GND R10 32k CA1 220µF 35V MBR1100 100µH 12V 500mW 10k RF4 46.4k 0.1% RF3 24.3k 0.1% 100Ω IRL2505 MTD2N20RX1 24Ω 1/2W + CIN1 330µF 6.3V 100pF 0.33µF 0.1µF 16V 10nF 50VC3 0.1µF MMSD4148 MMSD4148 +VIN CB1 120µF 63V + CB2 120µF 63V T1: PHILIPS EFD25-3C85 FIRST WIND T1B, T1C AND T1D TRIFILAR SECOND WIND T1A QUADFILAR AIR GAP: 0.88mm OR 2 · 0.44mm SPACERS CB3 39µF 100V+ 6 U4 LT1006S8 + CA2 220µF 35V + CA3 220µF 35V MUR120
1693 TA03
–24V 6 U3 LT1006S8 1.2k RF2 47.5k SLIC Power Supply
0.015µF 1500pF C10 220pF 390pF 0.1µF 10µF 16V 30.1k BINH PINV PWR V IN 1000pF V IN –5V VOUT 3.3V SENSE LTC1266 SENSE– VFB 10Ω 2.2Ω 2.2Ω 0.015Ω VS 100Ω R11 100k 2N3906 PANASONIC ETQPAF4R8HA COILCRAFT DO3316P-102 3.3V VS 6.81k 2N3906 2N7002 R10 100k R15 1.2k C16 10µF 16V R14 51ΩC15 0.1µF U2A LTC1693-2 Si4420
- 2 Si4420
- 2 U2B LTC1693-2 2N3904 R19 R13 1.30k R12 4.75k 13k R16 3.6k MBRO530 MBRO530 MBRS130 C17 100pF R18 6.81k+ 330µF 6.3V
- 5 330µF 6.3V
- 5 MBRO530 MBRO530 C14 10µF 16V C12 4700pF C11 4700pF L1* 4.8µH C13 0.1µF L2** 1µH 0.015Ω 330µF 6.3V
- 2 Negative-to-Positive Synchronous Boost Converter
V IN CT ITH SENSE– BDRIVE PGND LB OUT LBIN SGND SHDN V FB SENSE+ LTC1266A 6.2V 500mW 220µF 16V 0.1µF 100VQ4 FZT694B MMSD4148 MMSD4148R1 47k IN1 GND1 IN2 GND2 V CC1 OUT1 VCC2 OUT2 LTC1693-1 WINDING T1A T1B T1C T1D T1E T1F # TURNS AWG R11 12.1k 390Ω D10 1N4148 100pF NPO T1 WINDING ORDER: 1. T1A, T1B, T1C, T1D QUAD-FILAR, WOUND FIRST, AFTER T1A, T1B, T1C AND T1D WOUND, REMOVE
2 TURNS FROM T1B AND 1 TURN FROM T1C
- T1E WOUND ON TOP, SPREAD EVENLY 3. LAYER OF INSULATION 4. T1F WOUND ON TOP, SPREAD EVENLY T1 CORE: COILTRONICS VP4-TYPE, AIR GAP, 0.7mm or 2 · 0.35mm SPACERS PRIMARY INDUCTANCE OF T1F = 50µH ALTERNATIVE CORES: SIEMENS EFD20, N67 MATERIAL, TDK PC40-EPC17 T1 TRANSFORMER COILTRONICS VP4-TYPE 100Ω IRF620 1nF 0.1µF 0.1µF 25V CIN1 220µF 50V + CIN2 220µF 50V CC2 100pF CC1 10nF RCL 6.8k C11 120pF 5% NPO +V1 +V1 +V1 –V IN –24V TO –35V GND + T1A #28 Q Si9803 QO2 Si9803 LO2 2.2µH DO3 MBRM140 BAV21 BAV21 3.3V 500mW 22Ω 2N5401 1nF 50V T1B #28 T1C #28 C O2A 330µF 6.3V T1F 32T #28 50µH T1D #28 T1E #28 LO1 1µH LO3 2.2µH DO4 MBRM140 + CO3A 330µF 6.3V CO4 220µF 25V C11 0.1µF 100V
1693 TA04
5.6V 0.5W 1nF 2N2222 CO1A 330µF 6.3V CO3B 330µF 6.3V +CO2B 330µF 6.3V RF1 42.2k 10Ω RX1 120Ω 1/2W 0.1Ω 4.7Ω CO1B 330µF 6.3V CX1 220pF 50V CO4B 0.1µF 16V 0.8A 3.3V 0.3A 2.5V 0.3A –5V 30mA
- •• Multiple Output Telecom Power Supply
V CC2 OUT2 OUT1 GND1 VCC1 IN2 IN1 GND2 LTC1693-1 V CC2 OUT2 OUT1 GND1 GND2 IN2 V CC1 IN1 LTC1693-1 COMP RTOP GND-F GND-S RMID 65 7 32 4 4.7k 470Ω 470Ω BAT54 BAT54 W1 W4 SUD30N04-10 SUD30N04-10 IRF1310NS 1nF SEC HV10Ω 10Ω 4.8µH PANASONIC ETQP AF4R8H 1nF 330µF 6.3V 330µF 6.3V 330µF 6.3V 10Ω 4.7nF 4.7nF 47Ω 0.1µF 4.7k + + + –VOUT +VOUT –VOUT +VOUT OUTPUT 5V/10A C3, C4, C5: SANYO OS-CON 1µF FZT600 4.7µF 25V 0.47µF 50V 3.1V MMFT3904 10Ω BAS21 SEC HV LT1431CS8 REFCOLL18 1k470Ω 100k 3.01k 4.42k 1%9.31k 0.01µF +VOUT 0.22µF –VOUT SHORT JP1 FOR 5VOUT VBOOST TG TS SENSE+ SENSE– 12VIN RUN/SHDN PHASE BG VFB SYNC 5VREF CT SL/ADJ IAVG VREF SGND PGND SS VC LT1339 100k +VIN 13k 100k 2.4k 4.53k 0.1µF 1µF 2.2nF 2.2nF 0.1µF 4.7nF 68µF 20V AVX TSPE 3.9k 20 19 18 11 12 2 3 4 5 10 8 15 6 7 MMBD914LT1 3.3Ω 1µF CNY17-3 P P 36k BAS21 BAS21 BAS21 P JP2 JP3 5VOUT SHORT JP3, OPEN JP2 3.3VOUT, SHORT JP2, OPEN JP3 COILCRAFT DO1608-105 10k 10Ω2.2µF 0.025Ω 1/2W 470Ω 10Ω FMMT718 FMMT718 P IRF1310NS MURS120 MURS120 12V 2.2µF MMBD914LT1 470Ω BAT54 1.2µF 100V CER 1.2µF 100V CER +VIN P –VIN +VIN +VIN W3, 10T 32AWG, W4, 10T 32AWG W5, 10T 2 x 26AWG W4, 7T 6 x 26AWG W1, 18T BIFILAR 31AWG W3, 6T BIFILAR 31AWG W1, 10T 2 x 26AWG W1, 10T 32AWG, W2, 15T 32AWG 2MIL POLY FILM 2MIL POLY FILM OUTPUT CURRENT 0123456789 1 0 EFFICIENCY 36VIN 48VIN 72VINT1 PHILIPS EFD20-3F3 CORE LP = 720µH (AI = 1800) T2 ER11/5 CORE AI = 960µH
1693 TA10
48V to 5V Isolated Synchronous Forward DC/DC Converter
VCC = 5V 680pF 0.1µF C3 4.7µF + CL 47µF
1693 TA06a
INDUCTOR PEAK CURRENT ≈ 600mA R2, C1 SET THE OSCILLATION FREQUENCY AT 200kHz R1 SETS THE DUTY CYCLE AT 45% EFFICIENCY ≈ 80% AT 50mA LOAD *SUMIDA CDRH125-220 13k 7.5k BAT85 1N5819 L1* 22µH BS170
71 LTC1693-3
DUTY CYCLE (%) OUTPUT VOLTAGE (V) 40 45 50 55
1693 TA06b
VCC = 5V 50mA LOAD OUTPUT VOLTAGE (V) EFFICIENCY (%) 100 11 12 13 14
1693 TA06c
VCC = 5V 50mA LOAD
VCC = 5V VCC = 5V 680pF 1µF 1µF + CL 47µF
1693 TA07a
R1, C1 SET THE OSCILLATION FREQUENCY AT 150kHz AND THE DUTY CYCLE AT 35% 11k 1N5817 1N5817 OUTPUT CURRENT (mA) OUTPUT VOLTAGE (V) 20 40 60 80
1693 TA07b
VCC = 5V OUTPUT CURRENT (mA) EFFICIENCY (%) 100
1693 TA07c
10 20 30 50 9060 70 80 100 VCC = 5V
VCC = 5V 680pF 1µF 1µF CL 47µF
1693 TA08a
R1, C1 SET THE OSCILLATION FREQUENCY AT 150kHz AND THE DUTY CYCLE AT 35% 11k 1N5817 1N5817 OUTPUT CURRENT (mA) OUTPUT VOLTAGE (V) 20 40 60 80
1693 TA08b
VCC = 5V OUTPUT CURRENT (mA) EFFICIENCY (%) 100
1693 TA08c
10 20 30 50 9060 70 80 100 VCC = 5V
VCC = 5V VCC = 5V 680pF 1µF 1µF 1µF + C4 3.3µF + CL 47µF
1693 TA09a
R1, C1 SET THE OSCILLATION FREQUENCY AT 150kHz AND THE DUTY CYCLE AT 35% 11k 1N5817 1N5817 1N5817 1N5817 OUTPUT CURRENT (mA) OUTPUT VOLTAGE (V) 60 70 80 90
1693 TA09b
VCC = 5V OUTPUT CURRENT (mA) EFFICIENCY (%) 60 70 80 90
1693 TA09c
VCC = 5V
Dimensions in inches (millimeters) unless otherwise noted. 8-Lead Plastic MSOP (LTC DWG # 05-08-1660) MSOP (MS8) 1197 * DIMENSION DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS. MOLD FLASH, PROTRUSIONS OR GATE BURRS SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE ** DIMENSION DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSIONS. INTERLEAD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE 0.021 – 0.006 (0.53 – 0.015) 0° – 6° TYP SEATING PLANE 0.007 (0.18) 0.040 – 0.006 (1.02 – 0.15) 0.012 (0.30) REF 0.006 – 0.004 (0.15 – 0.102) 0.034 – 0.004 (0.86 – 0.102) 0.0256 (0.65) TYP 12 3 4 0.192 – 0.004 (4.88 – 0.10) 8 7 6 5 0.118 – 0.004* (3.00 – 0.102) 0.118 – 0.004 (3.00 – 0.102) 1 2 3 4 0.150 – 0.157 (3.810 – 3.988) 8 7 6 5 0.189 – 0.197* (4.801 – 5.004) 0.228 – 0.244 (5.791 – 6.197) 0.016 – 0.050 0.406 – 1.270 0.010 – 0.020 0°– 8° TYP 0.008 – 0.010 (0.203 – 0.254) SO8 0996 0.053 – 0.069 (1.346 – 1.752) 0.014 – 0.019 (0.355 – 0.483) 0.004 – 0.010 (0.101 – 0.254) 0.050 (1.270) TYP DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE 8-Lead Plastic Small Outline (Narrow 0.150) (LTC DWG # 05-08-1610) Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
ª LINEAR TECHNOLOGY CORPORA TION 1 999 1693fa LT/TP 1000 2K REV A • PRINTED IN USA PART NUMBER DESCRIPTION COMMENTS LTC1154 High Side Micropower MOSFET Drivers Internal Charge Pump, 4.5V to 48V Supply Range, t ON = 80ms, tOFF = 28ms LTC1155 Dual Micropower High/Low Side Drivers with 4.5V to 18V Supply Range Internal Charge Pump LTC1156 Dual Micropower High/Low Side Drivers with 4.5V to 18V Supply Range Internal Charge Pump LTC1157 3.3V Dual Micropower High/Low Side Driver 3.3V or 5V Supply Range LT®1160/LT1162 Half/Full Bridge N-Channel Power MOSFET Driver Dual Driver with Topside Floating Driver, 10V to 15V Supply Range LT1161 Quad Protected High Side MOSFET Driver 8V to 48V Supply Range, t ON = 200ms, tOFF = 28ms LTC1163 Triple 1.8V to 6V High Side MOSFET Driver 1.8V to 6V Supply Range, t ON = 95ms, tOFF = 45ms LT1339 High Power Synchronous DC/DC Controller Current Mode Operation Up to 60V, Dual N-Channel Synchronous Drive LTC1435 High Efficiency, Low Noise Current Mode 3.5V to 36V Operation with Ultrahigh Efficiency, Dual N-Channel MOSFET Step-Down DC/DC Controller Synchronous Drive RELATED PARTS Linear Technology Corporation 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 l FAX: (408) 434-0507 l www.linear-tech.com Isolated Push-Pull DC/DC Converter OUTPUT CURRENT (A) OUTPUT VOLTAGE (V) 0.1 0.5 0.7
1693 F05b
VCC = 5V OUTPUT CURRENT (A) EFFICIENCY (%) 100 0.8
1693 F05c
VCC = 5V Output Voltage Efficiency TYPICAL APPLICATIONU 74HC14 VCC = 5V VCC = 5V 0.1µF 390pF 0.1µF 1µF 6.2k 1213 LTC1693-2 T1: PHILIPS CPHS-EFD20-1S-10P FIRST WIND T1A AND T1C BIFILAR, THEN WIND T1E AND T1F BIFILAR, THEN WIND T1B AND T1D BIFILAR
1693 F05a
10Ω T1A 24T #32 V OUT 12V 2.2nF 100V
- 2 Si4410 V CC = 5V 74HC74 PRESET CLR GND D 14 1310 Q Q 330µF 6.3V 270µF 25V
- 3 10Ω MBR340 2.2nF 100V 10Ω C8 2.2nF 100V MBR340 1µH T1D 24T #32 T1B 24T #32 T1E 24T #28 T1F 24T #288 T1C 24T #32