A7985ATR Datasheet, PDF (1/44 Pages) STMicroelectronics – 2 A step-down switching regulator for automotive applications

A7985A
2 A step-down switching regulator for automotive applications
Datasheet - production data
Applications
 Dedicated to automotive applications
 Automotive LED driving
HSOP8 exposed pad
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
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
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March 2014
This is information on a product in full production.
DocID023128 Rev 5
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