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This is information on a product in full production.
March 2014 DocID023128 Rev 5 1/44
A7985A
2 A step-down switching regulator for automotive applications
Datasheet - production data
Features
2 A DC output current
Qualified following AEC-Q100 requirements
(see PPAP for more details)
4.5 V to 38 V input voltage
Output voltage adjustable from 0.6 V
250 kHz switching frequency, programmable
up to 1 MHz
Internal soft-start and enable
Low dropout operation: 100% duty cycle
Voltage feed-forward
Zero load current operation
Overcurrent and thermal protection
HSOP8 package
Applications
Dedicated to automotive applications
Automotive LED driving
Description
The A7985A is a step-down switching regulator
with a 2.5 A (minimum) current limited embedded
Power MOSFET, so it is able to deliver up to 2 A
current to the load depending on the application
conditions.
The input voltage can range from 4.5 V to 38 V,
while the output voltage can be set starting from
0.6 V to V
IN
.
Requiring a minimum set of external components,
the device includes an internal 250 kHz switching
frequency oscillator that can be externally
adjusted up to 1 MHz.
The HSOP8 package with exposed pad allows
the reduction of R
th(JA)
down to 40 °C/W.
Figure 1. Application circuit
HSOP8 exposed pad
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