150mA RF ULDO REGULATOR WITH ERROR FLAG AP2203
Preliminary Datasheet
1
Mar. 2006 Rev. 1. 0
BCD Semiconductor Manufacturing Limited
General Description
The AP2203 is a 150mA ULDO regulator, which pro-
vides ultra low dropout voltage (typically 165mV at
150mA), very low quiescent current (1
A maximum)
in shutdown mode and excellent power supply ripple
rejection (PSRR 75dB at 100Hz) in battery powered
applications, such as handsets and PDAs and in noise
sensitive applications, such as RF electronics.
The AP2203 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 AP2203 has 2.5V, 3.0V and 3.3V versions.
The AP2203 is available in space saving 5-pin SOT-
23-5 package.
Features
Error Flag to Indicate Undervoltage Fault
Up to 150mA Regulator Output
Low Quiescent Current
Low Dropout Voltage: V
DROP
=165mV at 150mA
High Output Accuracy: 1%
Good Ripple Rejection Ability: 75dB at 100Hz
and I
OUT
=100
A
Tight Load and Line Regulation
Low Temperature Coefficient
Over Current Protection
Thermal Protection
Reverse-battery Protection
Zero Off-mode Current
Logic-controlled Enable
Applications
Cellular Phones
Cordless Phones
Wireless Communicators
PDAs / Palmtops
Consumer Electronics
SOT-23-5
Figure 1. Package Type of AP2203
150mA RF ULDO REGULATOR WITH ERROR FLAG AP2203
Preliminary Datasheet
2
Mar. 2006 Rev. 1. 0
BCD Semiconductor Manufacturing Limited
Figure 2. Pin Configuration
of AP2203 (Top View)
Pin Description
Pin Number
Pin Name
Function
1
V
IN
Input voltage
2
GND
Ground
3
EN
Enable input: CMOS or TTL compatible input. Logic high=enable, logic
low=shutdown
4
FLAG
Error flag (Output pin): Open-collector output. Active low indicates an output
undervoltage condition
5
V
OUT
Regulated output voltage
Pin Configuration
K Package
(SOT-23-5)
V
IN
FLAG
V
OUT
EN
1
3
4
5
2
GND
150mA RF ULDO REGULATOR WITH ERROR FLAG AP2203
Preliminary Datasheet
3
Mar. 2006 Rev. 1. 0
BCD Semiconductor Manufacturing Limited
BANDGAP
REF
CURRENT LIMIT
THERMAL SHUTDOWN
+
-
+
-
R1
R2
Figure 3. Functional Block Diagram of AP2203
Functional Block Diagram
FLAG
V
IN
V
OUT
GND
EN
1
2
3
4
5
150mA RF ULDO REGULATOR WITH ERROR FLAG AP2203
Preliminary Datasheet
4
Mar. 2006 Rev. 1. 0
BCD Semiconductor Manufacturing Limited
Circuit Type
Package
K: SOT-23-5
E1: Lead Free
Blank: Tin Lead
AP2203 -
TR: Tape and Reel
2.5: Fixed Output 2.5V
Package
Temperature
Range
Part Number
Marking ID
Packing
Type
Tin Lead
Lead Free
Tin Lead
Lead Free
SOT-23-5
-40 to 125
o
C
AP2203K-2.5TR
AP2203K-2.5TRE1
K3C
E3C
Tape & Reel
AP2203K-3.0TR
AP2203K-3.0TRE1
K3F
E3F
Tape & Reel
AP2203K-3.3TR
AP2203K-3.3TRE1
K3G
E3G
Tape & Reel
BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant.
Ordering Information
3.0: Fixed Output 3.0V
3.3: Fixed Output 3.3V
150mA RF ULDO REGULATOR WITH ERROR FLAG AP2203
Preliminary Datasheet
5
Mar. 2006 Rev. 1. 0
BCD Semiconductor Manufacturing Limited
Parameter
Symbol
Value
Unit
Supply Input Voltage
V
IN
15
V
Enable Input Voltage
V
EN
15
V
Power Dissipation
P
D
Internally Limited (Thermal Protection)
W
Lead Temperature (Soldering, 5sec)
T
LEAD
260
o
C
Storage Temperature
T
STG
-65 to 150
o
C
ESD (Machine Model)
300
V
Thermal Resistance (No Heatsink)
JA
200
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.
Parameter
Symbol
Min
Max
Unit
Supply Input Voltage
V
IN
2.5
13.2
V
Enable Input Voltage
V
EN
0
13.2
V
Operating Junction Temperature
T
J
-40
125
o
C
Recommended Operating Conditions
Absolute Maximum Ratings (Note 1)
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