LDO_513
IP Library: Power Supply Range 2.9V to 13V, Low Power,
50mA Low Dropout Voltage Regulator
PRODUCT PREVIEW
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CHARGE CONTROL REGULATOR
VERY LOW DROPOUT VOLTAGE : 60mV
LARGE INPUT VOLTAGE RANGE
OUTPUT CURRENT : 50mA
LOW QUIESCENT CURRENT : 280碌A
HIGH PSRR : 60dB
NO CURRENT IN POWER DOWN MODE
SHORT CIRCUIT PROTECTION
The regulator needs two separated power
supplies, one (V
5V
) for the digital parts and
programming inputs (Stand-by and Power-down
mode) which cannot exceed 5V and one (Vin) as
the input voltage of the regulator.
Figure 1 :
Block Diagram
TYPICAL APPLICATIONS
鈥?Cellular and Cordless phones supplied by 1 cell
Lithium-ion battery / 3 cells Ni-MH or Ni-Cd
battery
鈥?PDA (Personal Digital Assistant), Smart phone
鈥?Portable equipment
鈥?Supply for Charge control devices of cellular
phone
APPLICATION NOTE
An external capacitor (C
OUT
= 1碌F) with an
equivalent serial resistance (ESR) in the range
0.02 to 0.6鈩?is used for regulator stability.
Figure 2 :
Typical Application Circuit
IN
IN
?
? OUT
PWRDWN
STDBY
?
?
V
REF
V
5V
?
LDO_513
V
IN
?
?
OUT
V
OUT
Power Down Mode
ON
OFF
Stand-by Mode
Stand-by Mode
鈫?/div>
鈫?/div>
Active Mode
鈫?/div>
鈫?/div>
PWRDWN
1碌F
?
LDO_513
ESR
C
OUT
STDBY
?
?
?
V
5V
GND
5V Power Supply
June 2002
This is advance information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
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STMICROELECTRONICS
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