Data Sheet
600mA CMOS LDO REGULATOR WITH ENABLE
General Description
The AP2111 is CMOS process low dropout linear
regulator with enable function, the regulator delivers
a guaranteed 600mA (Min) continuous load current.
The AP2111 provides 1.2V 1.8V, 2.5V, 3.3V and
4.8V regulated output, and provides excellent output
accuracy 1.5%, it is also provides a excellent load
regulation, line regulation and excellent load transient
performance due to very fast loop response. The
AP2111 has built-in auto discharge function.
The AP2111 features low power consumption.
The AP2111 is available in SOIC-8, PSOP-8 and
SOT-223 packages.
AP2111
Features
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Output Voltage Accuracy: ±1.5%
Output Current: 600mA (Min)
Foldback Short Current Protection: 50mA
Enable Function to Turn On/Off V
OUT
Low Dropout Voltage (3.3V):
250mV (Typ) @ I
OUT
=600mA
Excellent Load Regulation: 0.2%/A (Typ)
Excellent Line Regulation: 0.02%/V (Typ)
Low Quiescent Current: 55µA (Typ)
Low Standby Current: 0.01µA (Typ)
Low Output Noise: 50µV
RMS
PSRR: 65dB @ f=1kHz, 65dB @ f=100Hz
OTSD Protection
Stable with 1.0µF Flexible Cap: Ceramic,
Tantalum and Aluminum Electrolytic
Operating Temperature Range: -40°C to 85°C
ESD: MM 400V, HBM 4000V
Applications
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Laptop computer
Potable DVD
LCD Monitor
SOIC-8
PSOP-8
SOT-223
Figure 1. Package Types of AP2111
Jan. 2011
Rev. 1. 4
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BCD Semiconductor Manufacturing Limited
Data Sheet
600mA CMOS LDO REGULATOR WITH ENABLE
Pin Configuration
M Package
(SOIC-8)
AP2111
MP Package
(PSOP-8)
H Package
(SOT-223)
Figure 2. Pin Configuration of AP2111 (Top View)
Pin Descriptions
Pin Number
SOIC-8/PSOP-8
4
2
8
1, 3, 5, 6, 7
1
SOT-223
3
2
Pin Name
VIN
VOUT
EN
GND
Input voltage
Output voltage
Function
Chip enable, H – normal work, L – shutdown output
Ground
Jan. 2011
Rev. 1. 4
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BCD Semiconductor Manufacturing Limited
Data Sheet
600mA CMOS LDO REGULATOR WITH ENABLE
Functional Block Diagram
AP2111
EN
8
UVLO &
Shutdown Logic
4 (3)
VIN
Thermal
Shutdown
Foldback
Current Limit
2 (2)
VOUT
3m
V
REF
GND
1, 3, 5, 6, 7 (1)
A (B)
A: SOIC-8/PSOP-8
B: SOT-223
Figure 3. Functional Block Diagram of AP2111
Jan. 2011
Rev. 1. 4
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BCD Semiconductor Manufacturing Limited
Data Sheet
600mA CMOS LDO REGULATOR WITH ENABLE
Ordering Information
AP2111
-
AP2111
Circuit Type
Package
M: SOIC-8
MP: PSOP-8
H: SOT-223
G1: Green
Blank: Tube
TR: Tape & Reel
1.2: Fixed Output 1.2V
1.8: Fixed Output 1.8V
2.5: Fixed Output 2.5V
3.3: Fixed Output 3.3V
4.8: Fixed Output 4.8V
Package
Temperature
Range
Part Number
AP2111M-1.2G1
AP2111M-1.2TRG1
AP2111M-1.8G1
Marking ID
2111M-1.2G1
2111M-1.2G1
2111M-1.8G1
2111M-1.8G1
2111M-2.5G1
2111M-2.5G1
2111M-3.3G1
2111M-3.3G1
2111MP-1.2G1
2111MP-1.2G1
2111MP-1.8G1
2111MP-1.8G1
2111MP-2.5G1
2111MP-2.5G1
2111MP-3.3G1
2111MP-3.3G1
GH11B
GH11G
GH11H
GH11C
GH13D
Packing Type
Tube
Tape & Reel
Tube
Tape & Reel
Tube
Tape & Reel
Tube
Tape & Reel
Tube
Tape & Reel
Tube
Tape & Reel
Tube
Tape & Reel
Tube
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
SOIC-8
-40 to 85°C
AP2111M-1.8TRG1
AP2111M-2.5G1
AP2111M-2.5TRG1
AP2111M-3.3G1
AP2111M-3.3TRG1
AP2111MP-1.2G1
AP2111MP-1.2TRG1
AP2111MP-1.8G1
AP2111MP-1.8TRG1
PSOP-8
-40 to 85°C
AP2111MP-2.5G1
AP2111MP-2.5TRG1
AP2111MP-3.3G1
AP2111MP-3.3TRG1
AP2111H-1.2TRG1
AP2111H-1.8TRG1
SOT-223
-40 to 85°C
AP2111H-2.5TRG1
AP2111H-3.3TRG1
AP2111H-4.8TRG1
BCD Semiconductor's Pb-free products, as designated with "G1" suffix in the part number, are RoHS compliant
and Green.
Jan. 2011
Rev. 1. 4
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BCD Semiconductor Manufacturing Limited
Data Sheet
600mA CMOS LDO REGULATOR WITH ENABLE
Absolute Maximum Ratings (Note 1)
Parameter
Power Supply Voltage
Operating Junction Temperature
Range
Storage Temperature Range
Lead Temperature (Soldering, 10sec)
Thermal Resistance (No Heatsink)
AP2111
Symbol
V
IN
T
J
T
STG
T
LEAD
SOIC-8
θ
JA
PSOP-8
SOT-223
Value
6.5
150
-65 to 150
260
144
143
128
400
4000
Unit
V
ºC
ºC
ºC
ºC/W
V
V
ESD (Machine Model)
ESD (Human Body Model)
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.
Recommended Operating Conditions
Parameter
Supply Voltage
Operating Ambient
Range
Temperature
Symbol
V
IN
T
A
Min
2.5
-40
Typ
Max
6.0
85
Unit
V
°C
Jan. 2011
Rev. 1. 4
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BCD Semiconductor Manufacturing Limited
