ACE515A
Technology
Description
300mA High Speed, Extremely Low Noise CMOS LDO Regulator
ACE515A series are 300mA, positive voltage regulator ICs fabricated by CMOS process.
Each of these ICs is equipped with a voltage reference, an error amplifier, a resistor network for setting
output voltage, a chip enable circuit, a current limit circuit and OTSD (over temperature shut down) circuit
to prevent the IC from over current and over temperature.
The ACE515A series have features of high ripple rejection, low dropout voltage, low noise, high output
voltage accuracy and low current consumption which make them ideal for use in various battery-powered
apparatus.
The ACE515A have 1.8V, 2.5V, 2.8V, 3.0V, 3.3V, 4.15V and 4.2V fixed voltage versions.
These ICs are available in tiny SC-70-5 and SC-82 packages as well as industry standard SOT-23-3 and
SOT-23-5 packages.
Features
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Excellent Ripple Rejection: 70dB Typical (1.8V Version)
Low Dropout Voltage: 65mV (I
OUT
=100mA, 3.3V Version)
Low Standby Current: 0.01μA Typical
Low Quiescent Current: 60μA Typical
Extremely Low Noise: 50μVrms Typical
Maximum Output Current: 300mA (Min.)
High Output Voltage Accuracy:
±2%
Compatible with Low ESR Ceramic Capacitor
Excellent Line/ Load Regulation
Application
CDMA/ GSM Cellular Handsets
Battery-powered Equipments
Laptops, Palmtops, Notebook Computers
Hand-held Instruments
PCMCIA Cards
Portable Information Appliances
VER 1.2
1
Technology
Absolute Maximum Ratings
Parameter
Input voltage
Enable Input Voltage
Output Current
Junction Temperature
Storage Temperature Range
Lead Temperature (Soldering, 10sec)
Thermal Resistance
SOT-23-3
SOT-23-5
SC-70-5
SC-82
ESD (Human Body Model)
ESD (Machine Model)
ACE515A
300mA High Speed, Extremely Low Noise CMOS LDO Regulator
Symbol
V
IN
V
CE
I
OUT
T
J
T
STG
T
LEAD
θ
JA
ESD
ESD
Max
6.5
-0.3 to V
IN
+0.3
450
150
-65 to 150
260
200
200
300
300
6000
400
Unit
V
V
mA
℃
℃
℃
℃/W
V
V
Note 1: Stresses greater than those listed under “ Absolute Maximum Ratings” may cause permanent damage to the device.
These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated
under “Recommended Operating Conditions” is not implied. Exposure to “Absolute Maximum Ratings” for extended periods may
affect device reliability.
Packaging Type
SOT-23-5 /SC-70-5
5
4
SOT-23-3
3
4
SC-82
3
1
2
3
1
2
1
2
Pin Number
Symbol
SOT-23-5 / SC-70-5 SOT-23-3 SC-82
1
3
4
V
IN
2
1
2
GND
3
4
5
2
1
3
CE
NC
V
OUT
Function
Input voltage
Ground
Active high enable input pin, Logic high=enable,
logic low=shutdown
No connection
Regulated output voltage
VER 1.2
2
Technology
Electrical Characteristics
ACE515A-1.8 Electrical Characteristics
ACE515A
300mA High Speed, Extremely Low Noise CMOS LDO Regulator
(V
IN
=2.8V, T
A
=25℃, C
IN
=1μF, Bold typeface applies over -40℃≦T
J
≦85℃,
unless otherwise specified.)
Parameter
Output Voltage
Input Voltage
Maximum Output Current
Load Regulation
Line Regulation
Dropout Voltage
Quiescent Current
Standby Current
Power Supply Rejection
Ratio
Output Voltage
Temperature Coefficient
Short Current Limit
RMS Output Noise
CE “High” Voltage
CE “Low” Voltage
Thermal Shutdown
Thermal Shutdown
Hysteresis
Symbol
V
OUT
V
IN
I
OUT
(Max.)
V
RLOAD
V
RLINE
V
DROP
I
Q
I
STD
PSRR
(ΔV
OUT
/
ΔI
OUT
)/
ΔT
I
SHORT
V
NOISE
Conditions
V
IN
=2.8V
1mA≦I
OUT
≦30mA
V
IN
*V
OUT
=1A, V
OUT
=1.76V
V
IN
=2.8V
1mA≦I
OUT
≦300mA
2.8V≦V
IN
≦6V
I
OUT
=30mA
I
OUT
=10mA
I
OUT
=100mA
I
OUT
=300mA
V
IN
=2.8V, I
OUT
=0mA
V
IN
=2.8V, V
CE
in OFF mode
Ripple 0.5Vp-p f=100Hz
V
IN
=2.8V
f=1KHz
I
OUT
=30mA
V
OUT
=0V
10Hz≦f≦100kHz
CE input voltage “High”
CE input voltage “Low”
Min
1.764
300
Typ
1.8
360
6
1
10
100
300
60
0.01
70
70
±100
50
50
Max
1.836
6
Units
V
V
mA
mV
mV
12
120
360
90
1.0
mV
uA
uA
dB
ppm/℃
mA
uVrms
V
V
℃
℃
1.5
0.4
160
25
ACE515A-2.5 Electrical Characteristics
(V
IN
=3.5V, T
A
=25℃, C
IN
=1μF, C
OUT
=1μF Bold typeface applies over -40℃≦T
J
≦85℃,
unless otherwise specified.)
Parameter
Output Voltage
Input Voltage
Maximum Output Current
Load Regulation
Line Regulation
Dropout Voltage
Quiescent Current
Symbol
V
OUT
V
IN
I
OUT
(Max.)
V
RLOAD
V
RLINE
V
DROP
I
Q
Conditions
V
IN
=3.5V
1mA≦I
OUT
≦30mA
V
IN
*V
OUT
=1A, V
OUT
=2.45V
V
IN
=3.5V
1mA≦I
OUT
≦300mA
3.5V≦V
IN
≦6V
I
OUT
=30mA
I
OUT
=10mA
I
OUT
=100mA
I
OUT
=300mA
V
IN
=3.5V, I
OUT
=0mA
Min
2.45
300
Typ
2.5
360
10
1
6.5
65
200
60
Max
2.55
6
Units
V
V
mA
mV
mV
10
100
300
90
mV
uA
4
VER 1.2
Technology
Standby Current
Power Supply Rejection
Ratio
Output Voltage
Temperature Coefficient
Short Current Limit
RMS Output Noise
CE “High” Voltage
CE “Low” Voltage
Thermal Shutdown
Thermal Shutdown
Hysteresis
I
STD
PSRR
(ΔV
OUT
/
ΔI
OUT
)/
ΔT
I
SHORT
V
NOISE
ACE515A
1.0
uA
dB
ppm/℃
mA
uVrms
V
V
℃
℃
300mA High Speed, Extremely Low Noise CMOS LDO Regulator
V
IN
=3.5V, V
CE
in OFF mode
Ripple 0.5Vp-p
f=100Hz
V
IN
=3.5V
f=1KHz
I
OUT
=30mA
V
OUT
=0V
10Hz≦f≦100kHz
CE input voltage “High”
CE input voltage “Low”
0.01
65
65
±100
50
50
1.5
0.4
160
25
ACE515A-2.8 Electrical Characteristics
(V
IN
=3.8V, T
A
=25℃, C
IN
=1μF, C
OUT
=1μF Bold typeface applies over -40℃≦T
J
≦85℃,
unless otherwise specified.)
Parameter
Output Voltage
Input Voltage
Maximum Output Current
Load Regulation
Line Regulation
Dropout Voltage
Quiescent Current
Standby Current
Power Supply Rejection
Ratio
Output Voltage
Temperature Coefficient
Short Current Limit
RMS Output Noise
CE “High” Voltage
CE “Low” Voltage
Thermal Shutdown
Thermal Shutdown
Hysteresis
Symbol
V
OUT
V
IN
I
OUT
(Max.)
V
RLOAD
V
RLINE
V
DROP
I
Q
I
STD
PSRR
(ΔV
OUT
/
ΔI
OUT
)/
ΔT
I
SHORT
V
NOISE
Conditions
V
IN
=3.8V
1mA≦I
OUT
≦30mA
V
IN
*V
OUT
=1A, V
OUT
=2.74V
V
IN
=3.8V
1mA≦I
OUT
≦300mA
3.8V≦V
IN
≦6V
I
OUT
=30mA
I
OUT
=10mA
I
OUT
=100mA
I
OUT
=300mA
V
IN
=3.8V, I
OUT
=0mA
V
IN
=3.8V, V
CE
in OFF mode
Ripple 0.5Vp-p f=100Hz
V
IN
=3.8V
f=1KHz
I
OUT
=30mA
V
OUT
=0V
10Hz≦f≦100kHz
CE input voltage “High”
CE input voltage “Low”
Min
2.744
300
Typ
2.8
360
11
1
6.5
65
200
60
0.01
65
65
±100
50
50
Max
2.856
6
Units
V
V
mA
mV
mV
10
100
300
90
1.0
mV
uA
uA
dB
ppm/℃
mA
uVrms
V
V
℃
℃
1.5
0.4
160
25
VER 1.2
5
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