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ACE502
Technology Description
400mA CMOS Low Dropout Voltage Low consumption Regulator
ACE502 series is a group of positive voltage output, low power consumption, low dropout voltage, three terminal regulator. It can provide 200mA output current when input / output voltage differential drops to 470mVVout=2.0V The very low power consumption of ACE502Iq=7uAcan greatly improve natural life of batteries. ACE502 can provide output value in the range of 1.5V~6.0V in 0.1V steps. It also can customized on command. ACE502 includes high accuracy voltage reference, error amplifier, current limit circuit and output driver module. ACE502 has well load transient response and good temperature characteristic, which can assure the stability of chip and power system. And it uses trimming technique to guarantee output voltage accuracy within 2%. ACE502 is available in SOT-89-3 SOT-23-3 SOT-23-5 packages which is lead free it also can available in these packages with lead.
Features
* * * * * * * * * * *
Low Power Consumption: 7uA (Typ) Maximum Output Current: 400mA Small Dropout Voltage 250mV@100mA (Vout=2.0V) / 470mV@200mA (Vout=2.0V) Input Voltage Range: 2.0V~10V Output Voltage Range: 1.5V~6.0V (customized on command in 0.1V steps) High Accurate: 2% (1% customized) Output Current Limit
Application
Battery Powered equipment Power Management of MP3. PDA. DSC. Mouse. PS2 Games Reference Voltage Source Regulation after Switching Power
Typical Performance Characteristic:
A CE50218AM+ Dropout Voltage
Vin (V)
VER 1.2
1

Technology Absolute Maximum Ratings
Parameter Max Input voltage Power Dissipation SOT-23-3 SOT-23-5 SOT-89-3 Junction temperature Storage temperature Ambient Temperature Symbol VIN
ACE502
400mA CMOS Low Dropout Voltage Low consumption Regulator
Max 10 0.15 0.25 0.5 125 - 45 to 150 -40 ~85
Unit V W
O O
TJ TS TA
C C O C
Packaging Type
SOT-89-3 SOT-23-3
3
SOT-23-5
5 4
1
2
3
1
2
1
2
3
Pin SOT-89-3 SOT-23-3 SOT-23-5(A) SOT-23-5(B) Function VIN 2 3 1 3 Supply Voltage Input VSS 1 1 2 2 Ground CE 3 4 Enable Pin NC 4 5 No connect VOUT 3 2 5 1 Output Voltage
Ordering information
Selection Guide ACE502 XX XX + H Halogen - free Pb - free AM : SOT-89-3 BM: SOT-23-3 BNA: SOT-23-5 BNB: SOT-23-5 Output Voltage 1.5V/2.2V.....6.0V
VER 1.2
2

Technology Block Diagram
ACE502
400mA CMOS Low Dropout Voltage Low consumption Regulator
Recommended Work Conditions
Item Input Voltage Range Ambient Temperature Min Recommended -40 Max Unit 8 V +125
Electrical Characteristics
(Test Conditions: Cin=1uF, Cout=1uF,TA=25, unless otherwise specified.)
ACE502-1.8V Parameter Input Voltage Output Voltage Maximum Output Current Input-Output Voltage Differential Line Regulation Load Regulation Quiescent Current Output Noise Ripple Rejection Output Voltage Temperature Coefficient
Symbol VIN VOUT IOUT(Max.) Dropout Voltage VOUT / VIN*VOUT VOUT Iq Noise PSRR VOUT / T*VOUT
Conditions
Typ Max 8 1.764 1.8 1.53 400 300 600 0.2 20 7 40 60 50 400 700 0.3 40 10
Min
Units V V mA mV %/V mA uA uVrms dB ppm/
VIN=VOUT+1.0V,VOUT>1.8 V*0.95 IOUT=100mA IOUT=200mA IOUT=40mA 2VIN8A VIN=2.8V 1mAIOUT100mA VIN=VOUT+1V f=10Hz to 100kHz, COUT=1F f=100Hz,IOUT=40mA, COUT=1F IOUT=10mA
VER 1.2
3

Technology
ACE502-2.0V Parameter Input Voltage Output Voltage Maximum Output Current Input-Output Voltage Differential Line Regulation Load Regulation Quiescent Current Output Noise Ripple Rejection Output Voltage Temperature Coefficient ACE502-3.0V Parameter Input Voltage Output Voltage Maximum Output Current Input-Output Voltage Differential Line Regulation Load Regulation Quiescent Current Output Noise Ripple Rejection Output Voltage Temperature Coefficient
ACE502
400mA CMOS Low Dropout Voltage Low consumption Regulator
Symbol VIN VOUT IOUT(Max.) Dropout Voltage VOUT / VIN*VOUT VOUT Iq Noise PSRR VOUT / T*VOUT
Conditions
Min
VIN=VOUT+1.0V,IOUT=40mA 1.96 VIN=VOUT+1.0V,VOUT>2.0*0.95 400 IOUT=100mA IOUT=200mA IOUT=40mA 2.2VIN8A VIN=3.0V 1mAIOUT100mA VIN=VOUT+1V f=10Hz to 100kHz, COUT=1F f=100Hz,IOUT=40mA, COUT=1F
Typ Max 8 2.0 2.04 250 470 0.2 20 7 40 60 50 400 600 0.3 40 10
Units V V mA mV %/V mA uA uVrms dB ppm/
Symbol VIN VOUT IOUT(Max.) Dropout Voltage VOUT / VIN*VOUT VOUT Iq Noise PSRR VOUT / T*VOUT
Conditions
Min
VIN=VOUT+1.0V,IOUT=40mA 2.94 VIN=VOUT+1.0V,VOUT>3.0*0.95 400 IOUT=100Ma IOUT=200mA IOUT=40mA 3.2VIN8A VIN=4.0V 1mAIOUT100mA VIN=VOUT+1V f=10Hz to 100kHz, COUT=1F f=100Hz,IOUT=40mA, COUT=1F
Typ Max 8 3.0 3.06 200 400 0.2 20 7 40 60 50 400 600 0.3 40 10
Units V V mA mV %/V mA uA uVrms dB ppm/
VER 1.2
4

Technology
ACE502-3.3V Parameter Input Voltage Output Voltage Maximum Output Current Input-Output Voltage Differential Line Regulation Load Regulation Quiescent Current Output Noise Ripple Rejection Output Voltage Temperature Coefficient
ACE502
400mA CMOS Low Dropout Voltage Low consumption Regulator
Symbol VIN VOUT IOUT(Max.) Dropout Voltage VOUT / VIN*VOUT VOUT Iq Noise PSRR VOUT / T*VOUT
Conditions
Min
Typ 3.3 200 400 0.2 20 7 40 60 50
VIN=VOUT+1.0V,IOUT=40mA 3.234 VIN=VOUT+1.0V,VOUT>3.3*0.95 400 IOUT=100Ma IOUT=200mA IOUT=40mA 3.5VIN8A VIN=4.3V 1mAIOUT100mA VIN=VOUT+1V f=10Hz to 100kHz, COUT=1F f=100Hz,IOUT=40mA, COUT=1F
Max 8 3.366 400 600 0.3 40 10
Units V V mA mV %/V mA uA uVrms dB ppm/
Typical Application Circuit
ACE502 Vin + Cin 1uF Vin GND + 1uF Cout Vout Vout
Application hints:
Note 1:Input capacitor (Cin=1uF) is recommended in all application circuit. Tantalum capacitor is recommended. Note 2:Output capacitor (Cout=1uF) is recommended in all application to assure the stability of circuit. Tantalum capacitor is recommended.
Explanation ACE502 is a series of low dropout voltage and low power consumption three pins regulator. Its application circuit is very simple, which only needs two outside capacitors. It is composed of these modules: high accuracy voltage reference, current limit circuit, error amplifier, output driver and power transistor. Current Limit module can keep chip and power system away from danger when load current is more than 400mA. ACE502 uses trimming technique to assure the accuracy of output value within2%, at the same time, temperature compensated is elaborately considered in this chip, which makes ACE502 's temperature coefficient within 50ppm/.
VER 1.2 5

Technology Typical Performance Characteristics
1. Load regulation VOUT=1.8V Load regulation (VIN=2.8V)
Output Voltage vs. Output Current VOUT=1.8V
ACE502
400mA CMOS Low Dropout Voltage Low consumption Regulator
VOUT=2V Load regulation (VIN=3V)
Output Voltage vs. Output Current VOUT=2V
IOUT (mA)
IOUT (mA)
VOUT=3.3V Load regulation (VIN=4.3V)
Output Voltage vs. Output Current VOUT=3.3V
VOUT=5V Load regulation (VIN=6V)
Output Voltage vs. Output Current VOUT=5V
IOUT (mA)
IOUT (mA)
2. Line Regulation VOUT=1.8V Line regulation (IOUT=40mA)
Line regulation (VOUT=1.8V)
VOUT=2.0V Line regulation (IOUT=40mA)
Line regulation (VOUT=2V)
VIN (V)
VIN (V)
VER 1.2
6

Technology
VOUT=3.3V Line regulation (IOUT=40mA)
Line regulation (VOUT=3.3V)
ACE502
400mA CMOS Low Dropout Voltage Low consumption Regulator
VOUT=5.0V Line regulation (IOUT=40mA)
Line regulation (VOUT=5V)
VIN (V)
VIN (V)
3. Input Voltage transient response VOUT=1.8V (IOUT=10mA)
VOUT=2.0V (IOUT=10mA)
VOUT=3.3V (IOUT=10mA)
VOUT=5.0V (IOUT=10mA)
VER 1.2
7

Technology
4. Load transient response VOUT=3.3V (VIN=4.3V)
ACE502
400mA CMOS Low Dropout Voltage Low consumption Regulator
VOUT=5.0V (VIN=6V)
5. Ripple rejection Ripple rejection COUT=1uF IOUT=40mA
VER 1.2
8

Technology Packing Information
SOT-89-3
ACE502
400mA CMOS Low Dropout Voltage Low consumption Regulator
VER 1.2
9

Technology Packing Information
SOT-23-3
ACE502
400mA CMOS Low Dropout Voltage Low consumption Regulator
VER 1.2
10

Technology Packing Information
SOT-23-5
ACE502
400mA CMOS Low Dropout Voltage Low consumption Regulator
VER 1.2
11

Technology
ACE502
400mA CMOS Low Dropout Voltage Low consumption Regulator
Notes ACE does not assume any responsibility for use as critical components in life support devices or systems without the express written approval of the president and general counsel of ACE Electronics Co., LTD. As sued herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and shoes failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user. 2. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness.
ACE Technology Co., LTD. http://www.ace-ele.com/
VER 1.2
12

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