MIC2507 Datasheet, PDF (1/8 Pages) Micrel Semiconductor – Quad Integrated High-Side Switch Not Recommended for New Designs

MIC2507
Micrel
MIC2507
Quad Integrated High-Side Switch
Not Recommended for New Designs
General Description
The MIC2507 is a quad integrated high-side power switch
that consists of four protected N-channel MOSFET output
pass transistors each with a dedicated TTL compatible input
and charge pump. The MIC2507 can be used instead of
separate high-side drivers and MOSFETs in many low-
voltage applications.
The MIC2507 switches 2.7V to 7.5V and can deliver at least
1A continuous current from any individual output. A slow
turn-on feature prevents high inrush current when switching
capacitive loads. The internal control circuitry is powered
from switch #1’s supply input. The MIC2507 allows any
output to be pulled higher than its input voltage while in the off
state.
A multipurpose open-drain fault flag output indicates overcur-
rent limiting, open-load detection, and thermal shutdown.
Overcurrent limiting is internally fixed and requires no exter-
nal components.
Open-load detection is active only when the switch is off.
Open-load detection requires one high-value resistor from
the load to the supply.
Thermal shutdown turns off the output if the die temperature
exceeds approximately 135°C. The switch automatically
restarts when the temperature falls 10°C.
The MIC2507 is available in SOIC packages with a tempera-
ture range of –40°C to +85°C.
Features
• 2.7V to 7.5V supply
• Current limit
• Open-load detection
• Thermal shutdown
• Open-drain fault flag
• <1µA off-state current
• Slow turn-on and fast turnoff
1ms typical rise time (load dependent)
• Low MOSFET on-resistance
120mΩ typical at 5V
130mΩ typical at 3.3V
Applications
• Battery Management
• Power Management
Ordering Information
Part Number
MIC2507BM
Temperature Range
–40°C to +85°C
Package
14-lead SOIC
Typical Application
+2.7V to +7.5V
Load
ON
Control OFF
Input #1
Control ON
Input #2 OFF
Load
MIC2507BN
1 _IN1
IN4 ¹⁴
2 _{OUT1 OUT4} 13
3 _{CTL1 CTL4} 12
4 _GND
FLG ¹¹
5 _{CTL2 CTL3} 10
6 _{OUT2 OUT3} 9
7 _IN2
IN3 ⁸
Load
ON
OFF Control
Input #4
“Fault”
LED
ON Control
OFF Input #3
Load
Distributed-Load Power Switch
Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 [phone] • fax + 1 [phone] • http://www.micrel.com
August 1999
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MIC2507