Data Sheet
HIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR
General Description
The AP2120 series are positive voltage regulator ICs
fabricated by CMOS process. Each of these ICs con-
sists of a voltage reference, an error amplifier, a resis-
tor network for setting output voltage, a current limit
circuit for current protection.
The AP2120 series feature high supply voltage 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
devices.
The AP2120 series have 1.2V, 1.3V, 1.5V, 1.8V, 2.5V,
2.8V, 3.0V, 3.2V, 3.3V, 3.6V, 4.0V and 5.0V versions.
The AP2120 are available in standard SOT-23, SOT-89
and TO-92 packages.
AP2120
Features
·
·
·
·
·
·
·
·
·
·
Low Dropout Voltage at I
OUT
=100mA: 200mV
Typical (Except 1.2V, 1.3V and 1.5V Versions)
Low Quiescent Current: 25μA Typical
High Ripple Rejection: 65dB Typical
（f=1kHz）
Output Current: More Than 150mA (250mA
Limit)
Extremely Low Noise: 15μVrms@V
OUT
=1.2V,
1.3V, 1.5V (10Hz to 100kHz)
Excellent Line Regulation: 4mV Typical
Excellent Load Regulation: 12mV Typical
High Output Voltage Accuracy:
±2%
Excellent Line Transient Response and Load
Transient Response
Compatible with Low ESR Ceramic Capacitor (as
Low as 1μF)
Applications
·
·
·
·
·
·
Mobile Phones, Cordless Phones
Wireless Communication Equipment
Portable Games
Cameras, Video Recorders
Sub-board Power Supplies for Telecom Equip-
ment
Battery Powered Equipment
SOT-23
SOT-89
TO-92 (Bulk Packing)
TO-92 (Ammo Packing)
Figure 1. Package Types of AP2120
Mar. 2013 Rev. 1. 4
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BCD Semiconductor Manufacturing Limited
Data Sheet
HIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR
Pin Configuration
N/NA Package
(SOT-23)
N
V
IN
3
AP2120
R Package
(SOT-89)
NA
GND
3
1
2
1
2
1
GND
2
V
IN
3
V
OUT
GND
V
OUT
V
IN
V
OUT
Z Package
(TO-92 (Bulk Packing))
3
V
OUT
2
V
IN
1
GND
Z Package
(TO-92 (Ammo Packing))
3
2
1
V
OUT
V
IN
GND
Figure 2. Pin Configuration of AP2120 (Top View)
Pin Description
Pin Number
SOT-23 (N)
1
2
3
SOT-23 (NA)
3
2
1
SOT-89/
TO-92
1
3
2
Pin Name
Function
GND
V
OUT
V
IN
Ground
Regulated Output Voltage
Input Voltage
Mar. 2013 Rev. 1. 4
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BCD Semiconductor Manufacturing Limited
Data Sheet
HIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR
Functional Block Diagram
AP2120
V
IN
3(1){2}
2(2){3}
V
OUT
VREF
CURRENT LIMIT
1(3){1}
GND
A(B){C}
A for SOT-23 (N)
B for SOT-23 (NA)
C for SOT-89/TO-92
Figure 3. Functional Block Diagram of AP2120
Mar. 2013 Rev. 1. 4
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BCD Semiconductor Manufacturing Limited
Data Sheet
HIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR
Ordering Information
AP2120
-
G1: Green
Circuit Type
TR: Tape and Reel or Ammo
Blank: Bulk
1.2:
1.3:
1.5:
1.8:
2.5:
2.8:
3.0:
3.2:
3.3:
3.6:
4.0:
5.0:
Output Voltage
1.2V(N)
1.3V(N)
1.5V(N)
1.8V(N)
2.5V(N)
SOT-23
-40 to 85
o
C
2.8V(N)
3.0V(N)
3.2V(N)
3.3V(N)
3.6V(N)
4.0V(N)
5.0V(N)
3.3V(NA)
SOT-23
-40 to 85
o
C
3.6V(NA)
4.0V(NA)
1.2V
SOT-89
-40 to 85
o
C
1.3V
1.5V
1.8V
AP2120
Package
N/NA: SOT-23
R: SOT-89
Z: TO-92
Fixed Output 1.2V
Fixed Output 1.3V
Fixed Output 1.5V
Fixed Output 1.8V
Fixed Output 2.5V
Fixed Output 2.8V
Fixed Output 3.0V
Fixed Output 3.2V
Fixed Output 3.3V
Fixed Output 3.6V
Fixed Output 4.0V
Fixed Output 5.0V
Packing Type
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Package
Temperature Range
Part Number
AP2120N-1.2TRG1
AP2120N-1.3TRG1
AP2120N-1.5TRG1
AP2120N-1.8TRG1
AP2120N-2.5TRG1
AP2120N-2.8TRG1
AP2120N-3.0TRG1
AP2120N-3.2TRG1
AP2120N-3.3TRG1
AP2120N-3.6TRG1
AP2120N-4.0TRG1
AP2120N-5.0TRG1
AP2120NA-3.3TRG1
AP2120NA-3.6TRG1
AP2120NA-4.0TRG1
AP2120R-1.2TRG1
AP2120R-1.3TRG1
AP2120R-1.5TRG1
AP2120R-1.8TRG1
GR4
GR5
GR6
GR7
GR8
GR9
GS2
GS3
GS4
GZ8
GZ9
GS5
GZ1
Marking ID
GAA
GBA
G13Q
G17Q
G22Q
G27Q
Mar. 2013 Rev. 1. 4
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BCD Semiconductor Manufacturing Limited
Data Sheet
HIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR
Ordering Information (Continued)
Package
Temperature Range
Output Voltage
2.5V
2.8V
3.0V
SOT-89
-40 to 85
o
C
3.2V
3.3V
3.6V
4.0V
5.0V
1.2V
1.2V
1.3V
1.3V
1.5V
1.5V
1.8V
1.8V
2.5V
2.5V
2.8V
TO-92
-40 to 85
o
C
2.8V
3.0V
3.0V
3.2V
3.2V
3.3V
3.3V
3.6V
3.6V
4.0V
4.0V
5.0V
5.0V
AP2120
Part Number
AP2120R-2.5TRG1
AP2120R-2.8TRG1
AP2120R-3.0TRG1
AP2120R-3.2TRG1
AP2120R-3.3TRG1
AP2120R-3.6TRG1
AP2120R-4.0TRG1
AP2120R-5.0TRG1
AP2120Z-1.2G1
AP2120Z-1.2TRG1
AP2120Z-1.3G1
AP2120Z-1.3TRG1
AP2120Z-1.5G1
AP2120Z-1.5TRG1
AP2120Z-1.8G1
AP2120Z-1.8TRG1
AP2120Z-2.5G1
AP2120Z-2.5TRG1
AP2120Z-2.8G1
AP2120Z-2.8TRG1
AP2120Z-3.0G1
AP2120Z-3.0TRG1
AP2120Z-3.2G1
AP2120Z-3.2TRG1
AP2120Z-3.3G1
AP2120Z-3.3TRG1
AP2120Z-3.6G1
AP2120Z-3.6TRG1
AP2120Z-4.0G1
AP2120Z-4.0TRG1
AP2120Z-5.0G1
AP2120Z-5.0TRG1
Marking ID
G28Q
G31Q
G33Q
G37Q
G41Q
G42Q
G43Q
G70Q
2120Z-1.2G1
2120Z-1.2G1
2120Z-1.3G1
2120Z-1.3G1
2120Z-1.5G1
2120Z-1.5G1
2120Z-1.8G1
2120Z-1.8G1
2120Z-2.5G1
2120Z-2.5G1
2120Z-2.8G1
2120Z-2.8G1
2120Z-3.0G1
2120Z-3.0G1
2120Z-3.2G1
2120Z-3.2G1
2120Z-3.3G1
2120Z-3.3G1
2120Z-3.6G1
2120Z-3.6G1
2120Z-4.0G1
2120Z-4.0G1
2120Z-5.0G1
2120Z-5.0G1
Packing Type
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Bulk
Ammo
Bulk
Ammo
Bulk
Ammo
Bulk
Ammo
Bulk
Ammo
Bulk
Ammo
Bulk
Ammo
Bulk
Ammo
Bulk
Ammo
Bulk
Ammo
Bulk
Ammo
Bulk
Ammo
BCD Semiconductor's products, as designated with "G1" suffix in the part number, are RoHS compliant and Green.
Mar. 2013 Rev. 1. 4
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BCD Semiconductor Manufacturing Limited
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