CM2841 150mA CMOS LDO WITH EN & PG GENERAL DESCRIPTION FEATURES The CM2841 family is positive, linear regulators featured low Very Low Dropout Voltage quiescent current (30µA typ.) with low dropout voltage, Low Current Consumption: Typ. 30µA, Max. 35µA making them ideal for battery applications. The space-saving High Accuracy Output Voltage: +/- 1.5% SOT-23-5 package is attractive for “Pocket” and “Hard Held” Guaranteed 150mA Output applications. Input Range up to 7.0V Thermal Shutdown These rugged devices have both Thermal Shutdown, and Current Limiting Current Fold-back to prevent device failure under the “Worst” Power Good Output Function of operating conditions. Compact Package: SOT-23-5 Factory Pre-set Output Voltages An additional feature is a “Power Good” detector, which pulls Short Circuit Current Fold-Back low when the output is out of regulation. Low Temperature Coefficient The CM2841 is stable with an output capacitance of 2.2µF or greater. APPLICATIONS Battery-powered devices Personal communication devices Home electric/electronic appliances PC peripherals TYPICAL APPLICATIONS IN IN 1M Ω PG 5V 2004/05/14 Rev. 1.3 C1 1uF OUT OUT C M 2841 GND EN C PG * For programming delay Champion Microelectronic Corporation C2 4.7uF Page 1 CM2841 150mA CMOS LDO WITH EN & PG PIN CONFIGURATION SOT-23-5 Top View PG 4 5 VIN GND OUT 1 2 EN 3 BLOCK DIAGRAM IN OUT 1uA Overcurrent Shutdown R1 Therm al Shutdown EN - PG AMP + + R2 Vref = 1.176V Vref x 85% GND 2004/05/14 Rev. 1.3 Champion Microelectronic Corporation Page 2 CM2841 150mA CMOS LDO WITH EN & PG ORDERING INFORMATION Part Number CM2841ACIM25 CM2841ABIM25 CM2841AIM25 CM2841GACIM25 CM2841GABIM25 CM2841GAIM25 Output Voltage 1.2V 1.3V 1.5V 1.2V 1.3V 1.5V Temperature Range -40℃ ~ +85℃ -40℃ ~ +85℃ -40℃ ~ +85℃ -40℃ ~ +85℃ -40℃ ~ +85℃ -40℃ ~ +85℃ Package SOT-23-5 SOT-23-5 SOT-23-5 SOT-23-5 SOT-23-5 SOT-23-5 Note: For other pre-set output voltage, please contact Champion Sales office. ABSOLUTE MAXIMUM RATINGS OPERATING RATINGS Input Voltage Ambient Temperature Range (TA) ……... -40℃ to +85℃ …………….……………………………. +7V Output Current …………………….…… PD / (VIN - Vo) Output Voltage …………………… GND-0.3V to VIN+0.3V Junction Temperature Range …..…... -40℃ to +125℃ ESD Classification ………………………………………… B THERMAL INFORMATION Parameter Thermal Resistance (Θjc) Internal Power Dissipation (PD) (ΔT = 100℃) Maximum Junction Temperature Maximum Lead Temperature (10 Sec) SOT-23-5 SOT-23-5 Maximum 160 250 Unit ℃/W mW 150 300 ℃ ℃ *With Junction sink capable of twice times ofΘjc Caution: Stress above the listed absolute rating may cause permanent damage to the device. 2004/05/14 Rev. 1.3 Champion Microelectronic Corporation Page 3 CM2841 150mA CMOS LDO WITH EN & PG ELECTRICAL CHARACTERISTICS TA = +25℃; unless otherwise noted Parameter Symbol Input Voltage VIN Output Voltage Accuracy VOUT CM2841 Test Conditions Min. Typ. Note 1 IO = 1mA IO = 150mA, -1.5 Max. Unit 7 V 1.5 % 1.2V< VO(NOM)<=2.0V 1300 2.0V< VO(NOM)<=2.5V 800 Dropout Voltage VDROPOUT Output Current IO VOUT > 1.2V 150 Current Limit ILIM VOUT > 1.2V 300 Short Circuit Current ISC VOUT < 0.8V 150 300 mA Quiescent Current IQ IO = 0mA 30 35 μA Ground Pin Current IGND IO = 1mA to 150mA VOUT=VO(NOM)-1.5%, IOUT=1mA, VIN=VOUT+1 to 2.5V< VO(NOM) mV 300 mA 450 mA 30 35 μA VOUT < 2.0V -0.1 0.02 0.1 % 2.0V<VOUT < 3.0V -.015 0.03 0.15 % 3.0V<VOUT -0.3 0.06 0.3 % 0.2 1 150 % ℃ Line Regulation REGLINE Load Regulation REGLOAD Over Temperature Shutdown OTS Over Temperature Hystersis OTH 30 ℃ VOUT Temperature Coefficient TC 25 ppm/℃ Power Supply Rejection PSRR Output Voltage Noise EN Input Bias Current EN Input Threshold eN VOUT+2 IO=1mA to 150mA 135 IO = 100mA CO=2.2µF ceramic f=10Hz to 100kHz IO = 10mA f=1kHz 60 f=10kHz 50 f=100kHz 40 CO=2.2µF 30 dB μVrms IEH VEN=VIN, VIN=2.7V to 7V 0.1 μA 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 3.0 μA 0.1 V VEL VIN=2.7V to 7V Shutdown Supply Current ISD VIN=5.0V, VOUT=0V, VEN < VEL Shutdown Output Voltage VO, SD IO=150mA Output Under Voltage VUV 0 VIN/2-0.8V 2.0 0 V 2.5V<=VOUT <= 5.0V 85 1.2V<=VOUT <= 2.5V 85 %V O(NOM) PG Leakage Current ILC VPG = 7V 1 μA PG Voltage Rating VPG VOUT in regulation 7 V PG Voltage Low VOL ISINK = 2mA 0.1 V Delay Time to PG tDELAY 5 ms 1 Note 1. VIN(MIN) = VOUT + VDROPOUT 2004/05/14 Rev. 1.3 Champion Microelectronic Corporation Page 4 CM2841 150mA CMOS LDO WITH EN & PG DETAILED DESCRIPTION The CM2841 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 150mA. During thermal shutdown, the output voltage remains low. Normal operation is restored when the junction temperature drops below 120℃. The CM2841 switches from voltage mode to current mode when the load exceeds the rated output current. This prevents over-stress. The CM2841 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 CM2841 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 CM2841 includes the Power Good feature. Normally, Pin 4 is “Low”, however, when the output is less than 15% of the specified voltage, it pulls low. This can occur under the following conditions: 1) Input Voltage too low 2) During Over-Temperature 3) During Over-Current 2004/05/14 Rev. 1.3 Champion Microelectronic Corporation Page 5 CM2841 150mA CMOS LDO WITH EN & PG TYPICAL ELECTRICAL CHARACTERISTICS 2004/05/14 Rev. 1.3 Champion Microelectronic Corporation Page 6 CM2841 150mA CMOS LDO WITH EN & PG 2004/05/14 Rev. 1.3 Champion Microelectronic Corporation Page 7 CM2841 150mA CMOS LDO WITH EN & PG 2004/05/14 Rev. 1.3 Champion Microelectronic Corporation Page 8 CM2841 150mA CMOS LDO WITH EN & PG PACKAGE DIMENSION SOT-23-5 (M25) D 5 4 b1 With Plating c c1 A A1 E E1 A2 b b Base Metal b1 c Section B-B c1 D E 1 2 3 e E1 b L e1 L1 e θ1 e1 θ θ1 θ A2 A θ2 θ2 A1 L 2004/05/14 Rev. 1.3 See Section B-B L1 Champion Microelectronic Corporation Page 9 CM2841 150mA CMOS LDO WITH EN & PG NUMBERING SCHEME Ordering Number: CM2841XYZ (note1) Ordering Number: CM2841GXYZ (note2) note1: CM2841: 150mA CMOS LDO X : Suffix for voltage output (note 3) Y : Suffix for Temperature Range (note 4) Z : Suffix for Package Type (note 5) note2: CM2841: 150mA CMOS LDO G : Suffix for Pb Free Product X : Suffix for voltage output (note 3) Y : Suffix for Temperature Range (note 4) Z : Suffix for Package Type (note 5) note 3: see CMOS LDO Voltage Suffix Table CM2841 will provide options of AC(1.2V), AB(1.3V), A(1.5V) note 4: Y= I : -40℃~+85℃ (only I grade support for all CMOS LDOs) note 5: Z is single alphabet with or without digits M25 : SOT-23-5 (TR only) CMOS LDO Voltage Suffix Table Output Voltage 1.2V 1.3V 1.4V 1.5V 1.6V 1.7V 1.8V 1.9V 2.0V 2.1V 2.2V 2.3V 2.4V 2.5V 2.6V 2004/05/14 Rev. 1.3 Suffix AC AB AA A B C D E F G H I J K L Output Voltage 2.7V 2.8V 2.9V 3.0V 3.1V 3.2V 3.3V 3.4V 3.5V 3.6V 3.7V 3.8V 3.9V 4.0V Champion Microelectronic Corporation Suffix M N O P Q R S T U V W X Y Z Page 10 CM2841 150mA CMOS LDO WITH EN & PG 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 T E L : +886-3-567 9979 F A X : +886-3-567 9909 11F, No. 306-3, SEC. 1, Ta Tung Road, Hsichih, Taipei Hsien 221, Taiwan 2004/05/14 Rev. 1.3 T E L : +886-2-8692 1591 F A X : +886-2-8692 1596 Champion Microelectronic Corporation Page 11