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Preliminary Datasheet 150mA RF ULDO REGULATOR General Description
The AP2201 is a 150mA output current fixed voltage regulator designed to provide very low noise (45µVrms at 80Hz-100KHz), ultra low dropout voltage (typically 165mV at 150mA), very low quiescent current (1µA maximum) 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 AP2201 also features individual logic compatible enable/shutdown control inputs, a low power shutdown mode for extended battery life, over current protection, over temperature protection, as well as reversed-battery protection.
AP2201 Features
· · · · · · · · · · · · · Up to 150mA Regulator Output Low Quiescent Current Low Dropout Voltage: VD=165mV at 150mA High Precision Output Voltage: ±1% Output Noise: 45µVrms at 80Hz-100KHz Good Ripple Rejection Ability: 75dB at 100Hz and IOUT=100µA Tight Load and Line Regulation Low Temperature Coefficient Over Current Protection Thermal Protection Reverse-battery Protection Zero Off-mode Current Logic-controlled Enable
The output capacitor of 1.0µF minimum and 2.2µF minimum near its pin are recommended when CBYP is not used and when CBYP is 470pF respectively. The Applications output capacitor should have 5Ω or less ESR, tantalum or aluminium electrolytic capacitors are adequate. · Cellular Phones Bypass capacitor is connected to the internal voltage · Cordless Phones www.DataSheet4U.com reference to quiet noise. Its recommended value is · Digital Still Cameras from 470pF to 1nF. If output noise is not a major con- · Wireless Communicators cern and rapid turn-on is necessary, omit CBYP and · PDAs / Palmtops leave BYP open. · PC Mother Board · Consumer Electronics The AP2201 has 2.6V, 2.8V and 3.0V versions now. The AP2201 is available in space saving 5-pin SOT23-5 package.
VIN=3.8V VIN CIN 1.0µF
AP2201-2.8
VIN EN GND BYP CBYP 470pF VOUT
VOUT=2.8V +
VOUT
COUT 2.2µF tantalum
SOT-23-5
Figure 1. Typical Application of AP2201
Figure 2. Package Type of AP2201
Jun. 2005 Rev. 1. 0
BCD Semiconductor Manufacturing Limited
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Preliminary Datasheet 150mA RF ULDO REGULATOR Pin Configuration
K Package (SOT-23-5)
AP2201
EN GND BYP
1 2 3
5
VIN
4
VOUT
Figure 3. Pin Configuration of AP2201 (Top View)
Pin Description
Pin Number 1 2 3 4 5 Pin Name EN GND BYP VOUT VIN Logic high enable input. Ground. Bypass capacitor for low noise operation. Regulated output voltage. Input voltage. Function
Jun. 2005 Rev. 1. 0
BCD Semiconductor Manufacturing Limited
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Preliminary Datasheet 150mA RF ULDO REGULATOR Functional Block Diagram AP2201
VIN
5
4
VOUT
BYP
3
+ EN
1
Current Limit Thermal Shutdown Bandgap Ref.
2
GND
Figure 4. Functional Block Diagram of AP2201
Ordering Information
AP2201
E1: Lead Free Blank: Tin Lead TR: Tape and Reel
Circuit Type
Package K: SOT-23-5
2.6: Fixed Output 2.6V 2.8: Fixed Output 2.8V 3.0: Fixed Output 3.0V
Jun. 2005 Rev. 1. 0
BCD Semiconductor Manufacturing Limited
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Preliminary Datasheet 150mA RF ULDO REGULATOR Ordering Information (Continued)
Package Temperature Range Part Number Tin Lead AP2201K-2.6TR SOT-23-5 -40 to 125oC AP2201K-2.8TR AP2201K-3.0TR Lead Free AP2201K-2.6TRE1 AP2201K-2.8TRE1 AP2201K-3.0TRE1 Marking ID Packing Type Tin Lead K1E K1G K1I Lead Free E1E E1G E1I Tape & Reel Tape & Reel Tape & Reel
AP2201
BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant.
Absolute Maximum Ratings (Note 1)
Parameter Supply Input Voltage Enable Input Voltage Power Dissipation Lead Temperature (Soldering, 5sec) Storage Temperature ESD (Machine Model) Thermal Resistance θJA Symbol VIN VEN PD TLEAD TSTG Value 15 15 Internally Limited 260 -65 to 150 200 (Note 2) Unit V V W
oC oC
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 dissipation at any ambient temperature is calculated using: PD(max)=(TJ(max) TA)/θJA. Exceeding the maximum allowable power dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown.
Recommended Operating Conditions
Parameter Supply Input Voltage Enable Input Voltage Operating Junction Temperature Symbol VIN VE.