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LDO REGULATOR. AP2121 Datasheet

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LDO REGULATOR. AP2121 Datasheet






AP2121 REGULATOR. Datasheet pdf. Equivalent




AP2121 REGULATOR. Datasheet pdf. Equivalent





Part

AP2121

Description

EXTREMELY LOW NOISE LDO REGULATOR

Manufacture

BCD

Datasheet
Download AP2121 Datasheet


BCD AP2121

AP2121; HIGH SPEED, EXTREMELY LOW NOISE LDO REGU LATOR General Description Features D ata Sheet AP2121 The AP2121 series are positive voltage regulator ICs fabrica ted by CMOS process. Each of these ICs consists of a voltage reference, an err or amplifier, a resistor network for se tting output voltage, a current limit c ircuit for current protection and a chi p-enable circuit (.


BCD AP2121

5-pin products only). The AP2121 series feature high supply voltage ripple reje ction, low dropout voltage, low noise, high output voltage accuracy, and low c urrent consumption which make them idea l for use in various battery-powered de vices. The AP2121 series have 1.2V, 1.3 V, 1.5V, 1.8V, 2.5V, 2.8V, 2.85V, 3.0V, 3.2V and 3.3V versions. The AP2121 are available in stan.


BCD AP2121

dard SOT-23-3, SOT23-5 and CSP-4 package s. · Low Dropout Voltage at IOUT=100m A: 150mV Typical (Except 1.2V, 1.3V and 1.5V Versions) · Low Standby Current: 0.1μA Typical · Low Quiescent Curren t: 25μA Typical · High Ripple Rejecti on: 70dB Typical (f=1kHz) · Output Current: More Than 200mA (300mA Limit) · Extremely Low Noise: 30μVrms (10Hz to 100kHz) · Excellent Line Re.



Part

AP2121

Description

EXTREMELY LOW NOISE LDO REGULATOR

Manufacture

BCD

Datasheet
Download AP2121 Datasheet




 AP2121
HIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR
General Description
Features
Data Sheet
AP2121
The AP2121 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 and a chip-enable circuit
(5-pin products only).
The AP2121 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 AP2121 series have 1.2V, 1.3V, 1.5V, 1.8V, 2.5V,
2.8V, 2.85V, 3.0V, 3.2V and 3.3V versions.
The AP2121 are available in standard SOT-23-3, SOT-
23-5 and CSP-4 packages.
· Low Dropout Voltage at IOUT=100mA: 150mV
Typical (Except 1.2V, 1.3V and 1.5V Versions)
· Low Standby Current: 0.1μA Typical
· Low Quiescent Current: 25μA Typical
· High Ripple Rejection: 70dB Typical f=1kHz
· Output Current: More Than 200mA (300mA
Limit)
· Extremely Low Noise: 30μVrms (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-23-3
SOT-23-5
Figure 1. Package Types of AP2121
CSP-4
Dec. 2012 Rev. 2. 6
BCD Semiconductor Manufacturing Limited
1





 AP2121
HIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR
Pin Configuration
Data Sheet
AP2121
N Package
(SOT-23-3)
VIN
3
1
GND
2
VOUT
J4/J4A Package
(CSP-4 (P 0.5)/CSP-4 (P 0.4))
Pin1 Mark
CE
VIN
K Package
(SOT-23-5)
VIN
GND
1
2
CE 3
5 VOUT
4 NC
J4C/J4B Package
(CSP-4 (P 0.5)/CSP-4 (P 0.4))
Pin1 Mark
VIN
VOUT
A1 A2
A1 A2
B1 B2
B1 B2
Pin Description
GND
VOUT
CE GND
Figure 2. Pin Configuration of AP2121 (Top View)
Pin Number
SOT-23-3 SOT-23-5 CSP-4
CSP-4
(J4/J4A) (J4C/J4B)
3 1 A2 A1
1 2 B1 B2
3 A1 B1
4
2 5 B2 A2
Pin Name
VIN
GND
CE
NC
VOUT
Function
Input voltage
Ground
Active high enable input pin. Logic high=enable,
logic low=shutdown
No connection
Regulated output voltage
Dec. 2012 Rev. 2. 6
BCD Semiconductor Manufacturing Limited
2





 AP2121
HIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR
Functional Block Diagram
Data Sheet
AP2121
VIN 3
VREF
CURRENT LIMIT
SOT-23-3
2 VOUT
V 1/A2/A1
IN
VREF
V5/B2/A2
OUT
1 GND
CE
3/A1/B1
CURRENT LIMIT
GND
2/B1/B2
SOT-23-5/CSP-4(J4/J4A)/CSP-4(J4C/J4B)
Figure 3. Functional Block Diagram of AP2121
Dec. 2012 Rev. 2. 6
BCD Semiconductor Manufacturing Limited
3



Recommended third-party AP2121 Datasheet






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