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PDF APL5320 Data sheet ( Hoja de datos )
| Número de pieza | APL5320 | |
| Descripción | 300mA Linear Regulator | |
| Fabricantes | ANPEC | |
| Logotipo |  |
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APL5320
Ultra-Low-Noise, High PSRR, Low-Dropout, 300mA Linear Regulator
Features
General Description
• Wide Operating Voltage: 2.5~6V
The APL5320 is a P-channel low dropout linear regulator
• Low Dropout Voltage: 290mV @ 3V/300mA
which needs only one input voltage from 2.5 to 6V, and
• Fixed Output Voltages: 1.2~3.7V with Step 100mV, delivers current up to 300mA to set output voltage. It also
and 2.85V, 4.75V
can work with low ESR ceramic capacitors and is ideal for
• Guaranteed 300mA Output Current
• High PSRR: 70dB
• Current-Limit Protection
using in the battery-powered applications such as note-
book computers and cellular phones. Typical dropout volt-
age is only 290mV at 300mA loading.
The APL5320 provides several versions of fixed output
• Controlled Short-Circuit Current: 50mA
voltages ranging from 1.2 to 3.7V with step 100mV and
• Over-Temperature Protection
2.85V, 4.75V. Current-limit with current foldback and ther-
• Stable with 1µF Capacitor for Any Load
mal shutdown functions protects the device against cur-
• Excellent Load/Line Transient
rent over-loads and over-temperature. The APL5320 is
• SOT-23-5, TSOT-23-5, SOT-23-3, SC-70-5, available in SOT-23-5, TSOT-23-5, SOT-23-3, SC-70-5,
VTDFN1.2x1.6-4, and TDFN1.6x1.6-6 Packages
VTDFN1.2x1.6-4, and TDFN 1.6x1.6-6 packages.
• Lead Free and Green Devices Available
(RoHS Compliant)
Pin Configuration
Applications
• Cellular Phones
• Portable and Battery-Powered Equipments
• Laptops, Palmtops, Notebook Computers
• Wireless LANs
• Portable Information Appliances
• GPSes
VIN 1
GND 2
SHDN 3
5 VOUT
4 NC
SOT23-5/TSOT-23-5/SC-70-5
(Top View)
Simplified Application Circuit
VIN
Enable
VIN VOUT
SHDN
GND
VOUT
VOUT 1
4 VIN
GND 2
3 SHDN
VTDFN1.2x1.6-4
(Top View)
SHDN 1
NC 2
VIN 3
6 GND
5 NC
4 VOUT
TDFN1.6x1.6-6
(Top View)
= Exposed Pad (connected to ground
plane for better heat dissipation)
ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and
advise customers to obtain the latest version of relevant information to verify before placing orders.
Copyright © ANPEC Electronics Corp.
Rev. A.9 - Mar., 2012
1
www.anpec.com.tw
Free Datasheet http://www.datasheetlist.com/
1 page  
APL5320
Electrical Characteristics (Cont.)
Unless
otherwise
specified,
these
specifications
apply
over
V =V +1V,
IN OUT
CIN=COUT=1µF
and
T =-40~85
A
oC.
Typical
values are at TA=25oC.
Symbol
Parameter
Test Conditions
APL5320
Min. Typ. Max.
Unit
OUTPUT VOLTAGE
Output Voltage Accuracy
REGLINE Line Regulation
REGLOAD Load Regulation
VDROP Dropout Voltage
IOUT=1mA, TA=25 oC
IOUT=1mA to 300mA, TA=-40~85oC
VOUT%/ VIN, VOUT+0.3V<VIN<6V,
IOUT=1mA
VOUT%, VIN= VOUT+1V,
0mA<IOUT<300mA
VOUT=1.5V, IOUT=300mA
VOUT=2V, IOUT=300mA
-2 - 2 %
-3 - 3 %
- - 0.2 %/V
- - 0.6 %
- 0.52 0.68 V
- 0.43 0.56 V
VOUT=3V, IOUT=300mA
- 0.29 0.38 V
OUTPUT VOLTAGE
PSRR Ripple Rejection
COUT=1µF,
IOUT=50mA
f=1kHz
f=10kHz
f=100kHz
- 70 - dB
- 63 - dB
- 35 - dB
Output Noise
VOUT Discharge Resistance
f=10Hz to 100kHz, COUT=10µF, IOUT = 1mA
-
100
- µVRMS
VSHDN=0V
- 0.7 - kΩ
SHUT DOWN
High Threshold Voltage
VSHDN
Low Threshold Voltage
VIN=2.5 to 6V
VIN=2.5 to 6V
1.5 -
-V
- - 0.4 V
ISHDN SHDN Input Current
PROTECTIONS
VSHDN=5V
- 0.2 - µA
ILIMIT Current-Limit Threshold
330 450 750 mA
ISHORT Short-Circuit Current
VOUT =0V
- 50 - mA
tSS Soft-Start
TOTP Over-Temperature Threshold
Over-Temperature Hysteresis
VOUT rising from 0 to 90%, RLOAD=50Ω
TJ rising
- 60 -
- 160 -
- 40 -
µs
oC
oC
Copyright © ANPEC Electronics Corp.
Rev. A.9 - Mar., 2012
5
www.anpec.com.tw
Free Datasheet http://www.datasheetlist.com/
5 Page 
APL5320
Function Description
Internal Soft-Start
An internal soft-start function controls rising rate of the
output voltage to limit the surge current at start-up. The
typical soft-start interval is about 60µs.
Thermal Shutdown
A thermal shutdown circuit limits the junction tempera-
ture of APL5320. When the junction temperature exceeds
+160oC, a thermal sensor turns off the output PMOS, al-
lowing the device to cool down. The regulator regulates
the output again through initiation of a new soft-start cycle
after the junction temperature cools by 40oC.The thermal
shutdown is designed with a 40oC hysteresis to lower
the average junction temperature during continuous ther-
mal overload conditions, extending lifetime of the device.
For normal operation, device power dissipation should
be externally limited so that junction temperature will not
exceed 125oC.
Current-Limit with Current Foldback
The APL5320 monitors the current via the output PMOS
and limits the maximum current. When the output current
reaches the current-limit threshold, current-limit with cur-
rent foldback circuit starts to work to prevent load and
APL5320 from damages during overload or short-circuit
conditions. Typical foldback current is about 50mA.
Shutdown Control
The APL5320 has an active-low shutdown function. Forc-
ing SHDN high (>1.5V) enables the VOUT; forcing SHDN
low (<0.4V) disables the V . The SHDN can not be left
OUT
floating. If it is not used, connect it to VIN for normal
operation.
Under-Voltage Lock Out (UVLO)
The APL5320 monitors the input voltage to prevent wrong
logic control. The UVLO function initiates a soft-start pro-
cess after input voltage exceeds its rising UVLO thresh-
old during power on. The UVLO function also shuts off
the output when the input voltage falls below it’s falling
threshold.
Copyright © ANPEC Electronics Corp.
Rev. A.9 - Mar., 2012
11
www.anpec.com.tw
Free Datasheet http://www.datasheetlist.com/
11 Page | ||
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