LDO513 Datasheet, PDF (1/4 Pages) STMicroelectronics – IP Library: Power Supply Range 2.9V to 13V, Low Power, 50mA Low Dropout Voltage Regulator

LDO_513
IP Library: Power Supply Range 2.9V to 13V, Low Power,
50mA Low Dropout Voltage Regulator
s CHARGE CONTROL REGULATOR
s VERY LOW DROPOUT VOLTAGE : 60mV
s LARGE INPUT VOLTAGE RANGE
s OUTPUT CURRENT : 50mA
s LOW QUIESCENT CURRENT : 280µA
s HIGH PSRR : 60dB
s NO CURRENT IN POWER DOWN MODE
s SHORT CIRCUIT PROTECTION
TYPICAL APPLICATIONS
– Cellular and Cordless phones supplied by 1 cell
Lithium-ion battery / 3 cells Ni-MH or Ni-Cd
battery
– PDA (Personal Digital Assistant), Smart phone
– Portable equipment
– Supply for Charge control devices of cellular
phone
APPLICATION NOTE
An external capacitor (C_OUT = 1µF) with an
equivalent serial resistance (ESR) in the range
0.02 to 0.6Ω is used for regulator stability.
Figure 2 : Typical Application Circuit
PRODUCT PREVIEW
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
IN ?
PWRDWN ?
STDBY ?
V_5V ?
V_REF
LDO_513
? OUT
V_IN
IN
?
OUT
?
V_OUT
Power Down Mode
ON
→
OFF
→
Stand-by Mode
Stand-by Mode →
Active Mode →
PWRDWN
?
LDO_513
STDBY
?
GND
?
?
V_5V
1µF
C_OUT
ESR
5V Power Supply
June 2002
1/4
This is advance information on a new product now in development or undergoing evaluation. Details are subject to change without notice.