MAX6469TA25BD3-T Просмотр технического описания (PDF) - Maxim Integrated
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MAX6469TA25BD3-T
Maxim Integrated
MAX6469TA25BD3-T Datasheet PDF : 20 Pages
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300mA LDO Linear Regulators with Internal
Microprocessor Reset Circuit
MAX6473/MAX6474/MAX6481/MAX6482 Pin Description
PIN
MAX6473/MAX6474
SOT23 TDFN-EP
1
1, 2
2
3
3
4
4
5
5
6
6
7, 8
—
—
BUMP
MAX6481/MAX6482
UCSP
A1
A2
A3
C3
C2
C1
—
NAME
FUNCTION
IN
GND
SHDN
RESET
MR
OUT
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 VIN for normal operation.
Active-Low Reset Output. RESET remains low while VOUT is below the
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.
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 VOUT if not used. MR has an internal pullup resistor of 40kΩ
(typ) to VOUT.
Regulator Output. Bypass OUT to GND with a minimum 3.3µF (min)
low-ESR capacitor.
Exposed Paddle (TDFN Only). EP is internally connected to GND.
EP
Connect EP to the ground plane to provide a low thermal-resistance
path from the IC junction to the PCB. Do not use as the electrical
connection to GND.
MAX6475/MAX6476/MAX6483/MAX6484 Pin Description
PIN
MAX6475/MAX6476
SOT23 TDFN-EP
1
1, 2
2
3
3
4
4
5
5
6
6
7, 8
—
—
BUMP
MAX6483/MAX6484
UCSP
A1
A2
A3
C3
C2
C1
—
NAME
FUNCTION
IN
GND
SHDN
RESET
FB
OUT
EP
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 VIN for normal operation.
Active-Low Reset Output. RESET remains low while FB is below the
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 Linear Regulator Controller or Remote Sense
Applications. Connect FB to the external load (VCC) to obtain the fixed
output voltage.
Regulator Output. Bypass OUT to GND with a minimum 3.3µF low-ESR
capacitor.
Exposed Paddle (TDFN Only). EP is internally connected to GND.
Connect EP to the ground plane to provide a low thermal-resistance path
from the IC junction to the PCB. Do not use as the electrical connection
to GND.
8 _______________________________________________________________________________________
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