RAA207700GBM/7701GBM/7702GBM

Preliminary

R07DS0891EJ0001 Rev.0.01

Page 10 of 17

Nov 29, 2012

Thermal Shutdown (TSD)

Thermal sensor monitors junction temperature of IC. When junction temperature exceeds 150°C, switching stops. After

junction temperature become 125°C, IC restart switching from soft start (Non-latched function).

Enhanced Light Load Function (ELL)

IC operates diode emulation mode in light load condition. To enhance light load efficiency, IC detects light load

condition automatically, and operate as Enhanced Light Load mode (ELL). In ELL mode, bias current of IC becomes

small, so this function can improve the efficiency.

Line Switch Driver

The RAA207700GBM/7701GBM/7702GBM incorporates high drivability built in line switch driver. The line switch

driver can drives large gate capacitance MOSFET with low power consumption. (Typical 8

A at Vin = 12 V)

Line switch driver operates independent of voltage regulator’s state.

LS_OUT

LS_IN

VIN

VIN

Input signal

0 V - 3.3 V

0 V - VIN

Vout1

Discrete

MOSFET

Vout2

Note: This function is independent of state of voltage regulator.