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ACE501
Technology Description
250mA CMOS Low Dropout Voltage Low consumption Regulator
ACE501 series is a group of positive voltage output, low power consumption, low dropout voltage, three terminal regulator. It can provide 250mA output current when input / output voltage differential drops to 400mV (Vin=4.0V. Vout=3.0V).The very low power consumption of ACE501 (lq=3.0uA) can greatly improve natural life of batteries. ACE501 can provide output value in the range of 1.2V~6.0V in 0.1V steps. It also can customized on command. ACE501 includes high accuracy voltage reference, error amplifier, current limit circuit and output driver module. ACE501 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%. ACE501 is available in SOT-89-3. SOT-23-3 package which is lead free. It also can available in these packages with lead.
Features
* * * * * * * * * * *
Low Power Consumption: 1.5uA (Typ) Maximum Output Current: 250mA Small Dropout Voltage 170mV@100mA (Vout=3.0V) / 400mV@250mA (Vout=3.0V) Input Voltage Range: 1.5V~10V Output Voltage Range: 1.2V~6.0V (customized on command in 0.1V steps) High Accurate: 2% (1% customized)e 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:
Output Voltage vs. Output Current (Vout=1.5V)
Output Current (mA)
VER 1.2
1

Technology Absolute Maximum Ratings
Parameter Input supply voltage Power Dissipation SOT-23-3 SOT-89-3 Junction temperature Storage temperature Ambient Temperature Symbol VIN
ACE501
250mA CMOS Low Dropout Voltage Low consumption Regulator
Max 10 0.15 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
1
2
3
1
2
Pin VSS VIN VOUT
SOT-89-3 1 2 3
SOT-23-3 1 3 2
Function Ground Supply Voltage Input Output Voltage
Ordering information
Selection Guide ACE501 XX XX + H Halogen - free Pb - free AM : SOT-89-3 BM: SOT-23-3 Output Voltage 1.2V/2.1V.....6.0V
VER 1.2
2

Technology Block Diagram
ACE501
250mA 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.)
ACE501-1.5V Parameter Input Voltage Output Voltage Maximum Output Current Input-Output Voltage Differential Line Regulation Load Regulation Quiescent Current Output Voltage Temperature Coefficient
Symbol VIN VOUT IOUT(Max.) Dropout Voltage VOUT / VINVOUT VOUT Iq VOUT / TVOUT
Conditions
Min 1.47 250
Typ Max 8 1.5 1.53
VIN=2.5V, VOUT>1.47 IOUT=100mA IOUT=40mA 1.6VVIN8A VIN=2.5V 1mAIOUT100mA VIN=2.5V IOUT=10mA
Units V V mA mV %/V mV uA ppm/
270 0.2 20 1.5 50
400 0.3 40 3.0
VER 1.2
3

Technology
ACE501-3.0 Parameter Input Voltage Output Voltage Maximum Output Current Input-Output Voltage Differential Line Regulation Load Regulation Quiescent Current Output Voltage Temperature Coefficient
ACE501
250mA CMOS Low Dropout Voltage Low consumption Regulator
Symbol VIN VOUT IOUT(Max.) Dropout Voltage VOUT / VINVOUT VOUT Iq VOUT / TVOUT
Conditions
Min 2.94 250
Typ Max 8 3.0 3.06 170 320 0.2 20 1.5 50 300 500 0.3 40
VIN=4V, VOUT>2.94 IOUT=100mA IOUT=200mA IOUT=40mA 3.2VVIN8A VIN=4.0V 1mAIOUT100mA VIN=4V IOUT=10mA
Units V V mA mV %/V mV uA ppm/
Typical Application Circuit
ACE501 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 ACE501 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 250mA. ACE501 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 ACE501's temperature coefficient within 50ppm/.
VER 1.2
4

Technology Typical Performance Characteristics
1. Load regulation
ACE501
250mA CMOS Low Dropout Voltage Low consumption Regulator
2. Line Regulation
3. Dropout Voltage
VER 1.2
5

Technology
4. Input Voltage transient response (Vout=1.5V, Iout=10mA)
ACE501
250mA CMOS Low Dropout Voltage Low consumption Regulator
Input Voltage transient response (Vout=1.5V, Iout=1mA)
Input Voltage transient response (Vout=3.0V, Iout=10mA)
Input Voltage transient response (Vout=3.0V, Iout=1mA)
5. Load transient response (Vout=1.5V)
Load transient response (Vout=3.0V)
VER 1.2
6

Technology Packing Information
SOT-89-3
ACE501
250mA CMOS Low Dropout Voltage Low consumption Regulator
VER 1.2
7

Technology Packing Information
SOT-23-3
ACE501
250mA CMOS Low Dropout Voltage Low consumption Regulator
VER 1.2
8

Technology
ACE501
250mA 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
9


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