Preliminary Datasheet
300mA RF ULDO REGULATOR WITH ERROR FLAG
General Description
The AP2211 is a 300mA ULDO regulator which pro-
vides ultra low dropout voltage (typically 250mV at
300mA), very low standby current (1
µ
A maximum)
and excellent power supply ripple rejection (PSRR
75dB at 100Hz) in battery powered applications, such
as handsets and PDAs and in noise sensitive applica-
tions, such as RF electronics.
The AP2211 also features an undervoltage monitor
with an error flag output, logic compatible enable/shut-
down control inputs, a low power shutdown mode for
extended battery life, over current protection, over
temperature protection as well as reversed-battery pro-
tection.
The AP2211 has 2.5V, 3.0V and 3.3V versions.
The AP2211 is available in space saving 5-pin SOT-
23-5 package.
AP2211
Features
·
·
·
·
·
·
·
·
·
·
·
·
·
Error Flag to Indicate Undervoltage Fault
Up to 300mA Output Current
Excellent ESR Stability
Low Standby Current
Low Dropout Voltage: V
DROP
=250mV at 300mA
High Output Accuracy: ±1%
Good Ripple Rejection Ability: 75dB at 100Hz
and I
OUT
=100
µA
Tight Load and Line Regulation
Low Temperature Coefficient
Over Current Protection
Thermal Protection
Reversed-battery Protection
Logic-controlled Enable
Applications
·
·
·
·
·
·
Cellular Phones
Cordless Phones
Wireless Communicators
PDAs/Palmtops
PC Mother Board
Consumer Electronics
SOT-23-5
Figure 1. Package Type of AP2211
Nov. 2006 Rev. 1. 2
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BCD Semiconductor Manufacturing Limited
Preliminary Datasheet
300mA RF ULDO REGULATOR WITH ERROR FLAG
Pin Configuration
K Package
(SOT-23-5)
AP2211
V
IN
GND
EN
1
2
3
5
V
OUT
4
FLAG
Figure 2. Pin Configuration of AP2211 (Top View)
Pin Description
Pin Number
1
2
3
4
5
Pin Name
V
IN
GND
EN
FLAG
V
OUT
Input voltage
Ground
Enable input: CMOS or TTL compatible input. Logic high=enable, logic
low=shutdown
Error flag (Output pin): Open-collector output. Active low indicates an output
undervoltage condition
Regulated output voltage
Function
Nov. 2006 Rev. 1. 2
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BCD Semiconductor Manufacturing Limited
Preliminary Datasheet
300mA RF ULDO REGULATOR WITH ERROR FLAG
Ordering Information
AP2211
-
E1: Lead Free
Blank: Tin Lead
TR: Tape and Reel
Package
K: SOT-23-5
2.5: Fixed Output 2.5V
3.0: Fixed Output 3.0V
3.3: Fixed Output 3.3V
AP2211
Circuit Type
Package
Temperature
Range
Part Number
Tin Lead
AP2211K-2.5TR
Lead Free
AP2211K-2.5TRE1
AP2211K-3.0TRE1
AP2211K-3.3TRE1
Marking ID
Packing Type
Tin Lead
K4C
K4F
K4G
Lead Free
E4C
E4F
E4G
Tape & Reel
Tape & Reel
Tape & Reel
SOT-23-5
-40 to 125
o
C
AP2211K-3.0TR
AP2211K-3.3TR
BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant.
Nov. 2006 Rev. 1. 2
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BCD Semiconductor Manufacturing Limited
Preliminary Datasheet
300mA RF ULDO REGULATOR WITH ERROR FLAG
Absolute Maximum Ratings (Note 1)
Parameter
Supply Input Voltage
Enable Input Voltage
Power Dissipation
Lead Temperature (Soldering, 10sec)
Junction Temperature
Storage Temperature
ESD (Machine Model)
Thermal Resistance (No Heatsink)
Symbol
V
IN
V
EN
P
D
T
LEAD
T
J
T
STG
ESD
θ
JA
SOT-23-5
Value
15
15
Internally Limited (Thermal Protection)
260
150
-65 to 150
300
200
Unit
V
V
W
o
C
o
C
o
C
AP2211
V
o
C/W
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 Input Voltage
Enable Input Voltage
Operating Junction Temperature
Symbol
V
IN
V
EN
T
J
Min
2.5
0
-40
Max
13.2
13.2
125
Unit
V
V
o
C
Nov. 2006 Rev. 1. 2
5
BCD Semiconductor Manufacturing Limited
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