Document
HIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR
General Description
Features
Data Sheet AP2122
The AP2122 series are positive voltage regulator ICs fabricated by CMOS process. Each of these ICs con-
·
Low Dropout Voltage at IOUT=100mA: 150mV Typical (Except 1.5V Version)
sists of a voltage reference, an error amplifier, a resistor network for setting output voltage, a current limit circuit for current protection and a chip enable circuit .
· · ·
Low Standby Current: 0.1µA Typical Low Quiescent Current: 25µA Typical High Ripple Rejection: 70dB Typical(f=10kHz)
The AP2122 series feature high ripple rejection, low · Maximum Output Current: More Than 150mA
dropout voltage, low noise, high output voltage accu-
(300mA Limit)
racy, and low current consumption which make them · Extremely Low Noise: 30µVrms (10Hz to
ideal for use in various battery-powered devices.
100kHz)
· Excellent Line Regulation: 4mV Typical
The AP2122 series have 1.5V, 1.8V, 2.5V, 2.8V, 3.0V, · Excellent Load Regulation: 12mV Typical
3.2V and 3.3V versions.
· High Output Voltage Accuracy: ±2%
· Excellent Line and Load Transient Response
The AP2122 are available in standard SOT-23-5 package.
·
Compatible with Low ESR Ceramic Capacitor (as Low as 1µF)
Applications
· Mobile Phones, Cordless Phones · MP3/4 · Portable Electronic Devices · Cameras, Video Recorders · Sub-board Power Supplies for Telecom Equip-
ment · Battery Powered Equipment
May. 2010 Rev. 1. 5
SOT-23-5 Figure 1. Package Type of AP2122
BCD Semiconductor Manufacturing Limited 1
HIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR Pin Configuration
K Package (SOT-23-5)
VOUT 1 GND 2
VIN 3
5 NC 4 CE
Figure 2. Pin Configuration of AP2122 (Top View)
Data Sheet AP2122
Pin Description
Pin Number 1 2 3 4 5
Pin Name VOUT GND VIN CE NC
Regulated output voltage
Function
Ground Input voltage
Active high enable input pin. Logic high=enable, logic low=shutdown No connection
May. 2010 Rev. 1. 5
BCD Semiconductor Manufacturing Limited 2
HIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR Functional Block Diagram
Data Sheet AP2122
VIN 3
VREF
1 VOUT
CE 4
CURRENT LIMIT
2 GND
Figure 3. Functional Block Diagram of AP2122
May. 2010 Rev. 1. 5
BCD Semiconductor Manufacturing Limited 3
HIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR Ordering Information
Data Sheet AP2122
AP2122
-
Circuit Type
A: Active High (Pull-down resistor built-in)
Package K: SOT-23-5
E1: Lead Free
G1: Green
TR: Tape and Reel
1.5: Fixed Output 1.5V 1.8: Fixed Output 1.8V 2.5: Fixed Output 2.5V 2.8: Fixed Output 2.8V 3.0: Fixed Output 3.0V 3.2: Fixed Output 3.2V 3.3: Fixed Output 3.3V
Package
Temperature Range
Condition
Part Number
Lead Free
Green
Marking ID Lead Free Green
Packing Type
Active High (Pull-down resistor built-in)
AP2122AK-1.5TRE1
AP2122AK-1.5TRG1
E2Z
G2Z
Tape & Reel
Active High (Pull-down resistor built-in)
AP2122AK-1.8TRE1
AP2122AK-1.8TRG1
E2U
G2U
Tape & Reel
Active High (Pull-down resistor built-in)
AP2122AK-2.5TRE1
AP2122AK-2.5TRG1
E2V
G2V
Tape & Reel
SOT-23-5
-40 to 85oC
Active High (Pull-down resistor built-in)
AP2122AK-2.8TRE1
AP2122AK-2.8TRG1
E2W
G2W
Tape & Reel
Active High (Pull-down resistor built-in)
AP2122AK-3.0TRE1
AP2122AK-3.0TRG1
E2X
G2X
Tape & Reel
Active High (Pull-down resistor built-in)
AP2122AK-3.2TRE1
AP2122AK-3.2TRG1
E3Y
G3Y
Tape & Reel
Active High (Pull-down resistor built-in)
AP2122AK-3.3TRE1
AP2122AK-3.3TRG1
E2Y
G2Y
Tape & Reel
BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant. Products with "G1" suffix are available in green packages.
May. 2010 Rev. 1. 5
BCD Semiconductor Manufacturing Limited 4
HIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR
Data Sheet AP2122
Absolute Maximum Ratings (Note 1)
Parameter
Symbol
Value
Unit
Input Voltage
VIN 6.5 V
Enable Input Voltage Output Current Junction Temperature Storage Temperature Range
VCE IOUT
TJ TSTG
-0.3 to VIN+0.3 300 150
-65 to 150
V mA oC oC
Lead Temperature (Soldering, 10sec)
TLEAD
260
oC
Thermal Resistance (Note 2)
θJA 250 oC/W
ESD (Human Body Model)
ESD 2000 V
ESD (Machine Model)
ESD 200 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. Note 2: Absolute maximum ratings indicate limits beyond which damage to the component may occur. Electrical specifications do not apply when operating the device outside of its operating ratings. The maximum allowable power dissipation is a function of the maximum junction temperature, TJ(max), the junction-to-ambient thermal resistance, θJA, and the ambient temperature, TA. The maximum allowable power dis.