CM2852 ETC1 | Alldatasheet

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300mA CMOS LDO WITH EN & PG 2003/12/05 Rev. 1.1 Champion Microelectronic Corporation Page 1 GENERAL DESCRIPTION

FEATURES

The CM2852 family is positive, linear regulators featured low quiescent current (30µA typ.) with low dropout voltage, making them ideal for battery applications. The space-saving SOT-23-5 package is attractive for “Pocket” and “Hard Held” applications. These rugged devices have both Thermal Shutdown, and Current Fold-back to prevent device failure under the “Worst” of operating conditions. An additional feature is a “Power Good” detector, which pulls low when the output is out of regulation. The CM2852 is stable with an output capacitance of 2.2µF or greater. ! Very Low Dropout Voltage ! Low Current Consumption: Typ. 30µA, Max. 35µA ! High Accuracy Output Voltage: +/- 2.5% ! Guaranteed 300mA Output ! Input Range of 2.5V to 7.0V ! Thermal Shutdown ! Current Limiting ! Power Good Output Function ! Compact Package: SOT-23-5 ! Factory Pre-set Output Voltages ! Short Circuit Current Fold-Back ! Low Temperature Coefficient

APPLICATIONS

! Battery-powered devices ! Personal communication devices ! Home electric/electronic appliances ! PC peripherals

24 Hours Technical Support--WebSIM

Champion provides customers an online circuit simulation tool called WebSIM. You could simply logon our website at www.champion-micro.com for details. TYPICAL APPLICATIONS IN OUT CM2852 PG GND EN IN OUT 1uF 4.7uF 1M Ω C PG * For programming delay > typ. 5ms (Optional)

300mA CMOS LDO WITH EN & PG 2003/12/05 Rev. 1.1 Champion Microelectronic Corporation Page 2 PIN CONFIGURATION SOT-23-5 Top View VIN OUT EN PG GND BLOCK DIAGRAM Overcurrent Shutdown Thermal Shutdown IN OUT GND Vref = 1.176V AMP PG EN 1uA Vref x 85% Digital PG 1-5ms

300mA CMOS LDO WITH EN & PG 2003/12/05 Rev. 1.1 Champion Microelectronic Corporation Page 3

ORDERING INFORMATION

1.2V -40℃ ~ +85℃ SOT-23-5 CM2852SIM25 3.3V -40℃ ~ +85℃ SOT-23-5 Note: For other pre-set output voltage, please contact Champion Sales office. ABSOLUTE MAXIMUM RATINGS OPERATING RATINGS Output Voltage …………………… GND-0.3V to VIN+0.3V Ambient Temperature Range (TA) ……... -40℃ to +85℃ THERMAL INFORMATION Parameter Maximum Unit Thermal Resistance (Θjc) SOT-23-5 160 ℃/W Internal Power Dissipation (PD) (ΔT = 100℃) SOT-23-5 250 mW Maximum Junction Temperature 150 Maximum Lead Temperature (10 Sec) 300 *With Junction sink capable of twice times ofΘjc Caution: Stress above the listed absolute rating may cause permanent damage to the device.

300mA CMOS LDO WITH EN & PG 2003/12/05 Rev. 1.1 Champion Microelectronic Corporation Page 4

ELECTRICAL CHARACTERISTICS

TA = +25℃; unless otherwise noted CM2852 Parameter Symbol Test Conditions Min. Typ. Max. Unit Input Voltage VIN Note 1 V Output Voltage Accuracy VOUT IO = 1mA -2.5 2.5 1.2V< VO(NOM)<=2.0V 1300 2.0V< VO(NOM)<=2.5V 800 Dropout Voltage VDROPOUT IO = 300mA, VOUT=VO(NOM)-2.5%, 2.5V< VO(NOM) 300 mV Output Current IO VOUT > 1.2V 150 mA Current Limit ILIM VOUT > 1.2V 450 mA Short Circuit Current ISC VOUT < 0.8V 150 300 mA Quiescent Current IQ IO = 0mA μA Ground Pin Current IGND IO = 1mA to 300mA μA VOUT < 2.0V -0.1 0.02 0.1 2.0V<VOUT < 3.0V -.015 0.03 0.15 Line Regulation REGLINE IOUT=1mA, VIN=VOUT+1 to VOUT+2 3.0V<VOUT -0.3 0.06 0.3 Load Regulation REGLOAD IO=1mA to 300mA 0.2 Over Temperature Shutdown OTS 135 150 Over Temperature Hysteresis OTH VOUT Temperature Coefficient TC ppm/℃ f=1kHz f=10kHz Power Supply Rejection PSRR IO = 100mA CO=2.2µF ceramic f=100kHz dB Output Voltage Noise eN f=10Hz to 100kHz IO = 10mA CO=2.2µF μVrms IEH VEN=VIN, VIN=2.7V to 7V 0.1 μA EN Input Bias Current IEL VEN=0V, VIN=2.7V to 7V 1.0 3.0 μA VEH VIN=2.7V to 7V VIN/2+0.8V VIN V EN Input Threshold VEL VIN=2.7V to 7V VIN/2-0.8V V Shutdown Supply Current ISD VIN=5.0V, VOUT=0V, VEN < VEL 2.0 3.0 μA Shutdown Output Voltage VO, SD IO=300mA 0.1 V 2.5V<=VOUT <= 5.0V Output Under Voltage VUV 1.2V<=VOUT <= 2.5V %V O(NOM) PG Leakage Current ILC VPG = 7V μA PG Voltage Rating VPG VOUT in regulation V PG Voltage Low VOL ISINK = 2mA 0.1 V Delay Time to PG tDELAY VIN=2.5V to 6.0V (Note 2) ms Note 1. VIN(MIN) = VOUT + VDROPOUT Note 2: Delay time will be varied by input voltage, but the delay time will still be in the spec from 1ms to 7ms when VIN rise time <2ms.

300mA CMOS LDO WITH EN & PG 2003/12/05 Rev. 1.1 Champion Microelectronic Corporation Page 5 DETAILED DESCRIPTION The CM2852 family of CMOS regulators contain a PMOS pass transistor, voltage reference, error amplifier, over-current protection, output short circuit protection, thermal shutdown, and power good function. The P-channel pass transistor receives data from the error amplifier, over-current shutdown, short output protection, and thermal protection circuits. During normal operation, the error amplifier compares the output voltage to a precision reference. Over-current and Thermal shutdown circuits become active when the junction temperature exceeds 150℃, or the current exceeds 300mA. During thermal shutdown, the output voltage remains low. Normal operation is restored when the junction temperature drops below 120℃. The CM2852 switches from voltage mode to current mode when the load exceeds the rated output current. This prevents over-stress. The CM2852 also incorporates current fold-back to reduce power dissipation when the output is short-circuited. This feature becomes active when the output drops below 0.95V, and reduces the current flow by 65%. Full current is restored when the voltage exceeds 0.95V. EXTERNAL CAPACITOR The CM2852 is stable with an output capacitor to ground of 2.2µF or greater. It can keep stable even with higher or poor ESR capacitors. A second capacitor is recommended between the input and ground to stabilize VIN. The input capacitor should be larger than 0.1µF to have a beneficial effect. All capacitors should be placed in close proximity to the pins. A “quiet” ground termination is desirable. ENABLE The Enable pin normally floats high. When actively, pulled low, the PMOS pass transistor shut off, and all internal circuits are powered down. In this state, the quiescent current is less than 1µA. This pin behaves much like an electronic switch. POWER GOOD The CM2852 includes the Power Good feature. Under normal operating condition which means output voltage is within the SPEC, PG should be high. If Vout is less than 85% VOUT SPEC, PG will go low. As VOUT comes back and reaches to the 95% VOUT SPEC, the PG will go high after 1ms~7ms again. (See Timing Diagram as below) VIN = VEN= 3.3V, Iload = 120mA, VOUT = 1.2V, Delay time = 4.5ms

300mA CMOS LDO WITH EN & PG 2003/12/05 Rev. 1.1 Champion Microelectronic Corporation Page 6 TYPICAL ELECTRICAL CHARACTERISTICS

300mA CMOS LDO WITH EN & PG 2003/12/05 Rev. 1.1 Champion Microelectronic Corporation Page 7

300mA CMOS LDO WITH EN & PG 2003/12/05 Rev. 1.1 Champion Microelectronic Corporation Page 8 PACKAGE DIMENSION SOT-23-5 (M25) L D E A b c θ e D E e b A b c Base Metal With Plating Section B-B See Section B-B L θ

300mA CMOS LDO WITH EN & PG 2003/12/05 Rev. 1.1 Champion Microelectronic Corporation Page 9 NUMBERING SCHEME note1: CM2852: 300mA CMOS LDO X : Suffix for voltage output (note 2) Y : Suffix for Temperature Range (note 3) Z : Suffix for Package Type (note 4) note 2: see CMOS LDO Voltage Suffix Table CM2852 will provide options of AC(1.2V), S(3.3V) note 3: Y= I : -40℃~+85℃ (only I grade support for all CMOS LDOs) note 4: Z is single alphabet with or without digits M25 : SOT-23-5 (TR only) CMOS LDO Voltage Suffix Table Output Voltage Suffix Output Voltage Suffix 1.2V AC 2.7V M 1.3V AB 2.8V N 1.4V AA 2.9V O 1.5V A 3.0V P 1.6V B 3.1V Q 1.7V C 3.2V R 1.8V D 3.3V S 1.9V E 3.4V T 2.0V F 3.5V U 2.1V G 3.6V V 2.2V H 3.7V W 2.3V I 3.8V X 2.4V J 3.9V Y 2.5V K 4.0V Z 2.6V L

300mA CMOS LDO WITH EN & PG 2003/12/05 Rev. 1.1 Champion Microelectronic Corporation Page 10 IMPORTANT NOTICE Champion Microelectronic Corporation (CMC) reserves the right to make changes to its products or to discontinue any integrated circuit product or service without notice, and advises its customers to obtain the latest version of relevant information to verify, before placing orders, that the information being relied on is current. A few applications using integrated circuit products may involve potential risks of death, personal injury, or severe property or environmental damage. CMC integrated circuit products are not designed, intended, authorized, or warranted to be suitable for use in life-support applications, devices or systems or other critical applications. Use of CMC products in such applications is understood to be fully at the risk of the customer. In order to minimize risks associated with the customer’s applications, the customer should provide adequate design and operating safeguards. HsinChu Headquarter Sales & Marketing 5F, No. 11, Park Avenue II, Science-Based Industrial Park, HsinChu City, Taiwan 11F, No. 306-3, SEC. 1, Ta Tung Road, Hsichih, Taipei Hsien 221, Taiwan T EL: +886-3-567 9979 T EL: +886-2-8692 1591 FAX: +886-3-567 9909 FAX: +886-2-8692 1596