MAX5087 Datasheet, PDF (1/12 Pages) Maxim Integrated Products – 45V, 400mA, Low-Quiescent-Current Linear Regulator with Adjustable Reset Delay

MAX5087
45V, 400mA, Low-Quiescent-Current
Linear Regulator with Adjustable Reset Delay
General Description
The MAX5087 high-voltage linear regulator operates
from an input voltage of 6.5V to 45V and delivers up to
400mA of output current. The device consumes only
70µA of quiescent current with no load and 11µA in
shutdown. The device includes a SET input, that when
connected to ground, selects a preset output voltage of
3.3V (MAX5087A) or 5.0V (MAX5087B). Alternatively,
the output voltage can be adjusted from 2.5V to 11V by
simply connecting SET to the regulator’s output through
a resistive divider network. The MAX5087 also provides
an open-drain, active-low microprocessor (µP) reset
output that asserts when the regulator output drops
below the preset output voltage threshold. An external
capacitor programs the reset timeout period. Other fea-
tures include an enable input, thermal shutdown, and
short-circuit protection.
The MAX5087 operates over the automotive tempera-
ture range of -40°C to +125°C and is available in a 16-
pin TQFN thermally enhanced package.
Automotive
Industrial
Home Security/Safety
Networking
Applications
Features
o Wide Operating Input Voltage Range (6.5V to 45V)
o Thermally Enhanced Package Dissipates
2.6W at T_A = +70°C (16-Pin TQFN)
o Guaranteed 400mA Output Current
o 70µA Quiescent Supply Current
o Preset 3.3V, 5.0V, or Adjustable 2.5V to 11V
Output Voltage
o Remote Load Sense Capability
o Enable Input
o Integrated µP Reset Circuit with Programmable
Timeout Period
o Thermal and Short-Circuit Protection
o -40°C to +125°C Operating Temperature Range
Ordering Information
PART
PIN-PACKAGE
OUTPUT
VOLTAGE (V)
MAX5087AATE+
16 TQFN-EP*
3.3
MAX5087BATE+
16 TQFN-EP*
5.0
MAX5087BATE/V+ 16 TQFN-EP*
5.0
Note: All devices are specified over the -40°C to +125°C oper-
ating temperature range.
*EP = Exposed paddle.
+Denotes lead-free package.
TOP VIEW
Pin Configuration
12 11 10 9
N.C. 13
N.C. 14
N.C. 15
MAX5087
N.C. 16
+
1234
8 GND
7 OUTSENSE
6 OUT
5 OUT
TQFN
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
19-3964; Rev 4; 4/13