MAX6471 MAXIM [Maxim Integrated Products], MAX6471 Datasheet - Page 7

• Manufacturer Part Number: MAX6471
• Description: 300mA LDO Linear Regulators with Internal Microprocessor Reset Circuit
• Manufacturer: MAXIM [Maxim Integrated Products]

MAX6471/MAX6472
MAX6469/MAX6470
SOT23
SOT23
1
2
3
4
5
6
1
2
3
4
5
6
PIN
PIN
QFN
QFN
1, 2
7, 8
1, 2
7, 8
3
4
5
6
300mA LDO Linear Regulators with Internal
3
4
5
6
_______________________________________________________________________________________
MAX6479/MAX6480
MAX6477/MAX6478
MAX6469/MAX6470/MAX6477/MAX6478 Pin Description
MAX6471/MAX6472/MAX6479/MAX6480 Pin Description
BUMP
BUMP
UCSP
UCSP
C3
C2
C1
A1
A2
A3
C3
C2
C1
A1
A2
A3
RESET
RESET
NAME
NAME
SHDN
GND
GND
OUT
OUT
SET
SET
MR
IN
IN
Microprocessor Reset Circuit
Regulator Input. Bypass IN to GND with a 0.1µF capacitor.
Ground. This pin also functions as a heatsink. Solder to large pads or
the circuit-board ground plane to maximize thermal dissipation.
Active-Low Shutdown Input. Connect SHDN to V
operation.
Active-Low Reset Output. RESET remains low while V
reset threshold. RESET remains low for the duration of the reset timeout
period after the reset conditions are terminated. RESET is available in
open-drain and push-pull configurations.
Feedback Input for Externally Setting the Output Voltage. Connect SET
to GND to select the preset output voltage. Connect SET to an external
resistor-divider network for adjustable output operation.
Regulator Output. Bypass OUT to GND with a minimum 3.3µF low-ESR
capacitor.
Regulator Input. Bypass IN to GND with a 0.1µF capacitor.
Ground. This pin also functions as a heatsink. Solder to large pads or
the circuit-board ground plane to maximize thermal dissipation.
Active-Low Manual Reset Input. The reset output is asserted while MR
is pulled low and remains asserted for the duration of the reset timeout
period after MR transitions from low to high. Leave MR unconnected or
connect to V
(typ) to V
Active-Low Reset Output. RESET remains low while V
reset threshold or while MR is held low. RESET remains low for the
duration of the reset timeout period after the reset conditions are
terminated. RESET is available in open-drain and push-pull
configurations.
Feedback Input for Externally Setting the Output Voltage. Connect SET
to GND to select the preset output voltage. Connect SET to an external
resistor-divider network for adjustable output operation.
Regulator Output. Bypass OUT to GND with a minimum 3.3µF low-ESR
capacitor.
OUT
OUT
.
if not used. MR has an internal pullup resistor of 40kΩ
FUNCTION
FUNCTION
IN
for normal
OUT
OUT
is below the
is below the
7