DATASHEET
ISL9307 FN7931
Rev 3.00
September 20, 2012 3MHz Dual 1500mA Step-Down Converters and Dual Low-Input LDOs Features The ISL9307 is an integrated mini Power Management IC
(mini-PMIC) ideal for applications for powering low-voltage
microprocessor or multiple voltage rails with a battery as an
input source, such as a single Li-ion or Li-polymer. ISL9307
integrates two high-efficiency, 3MHz, synchronous step-down
converters (DCD1 and DCD2) and two low-input, low-dropout
linear regulators (LDO1 and LDO2). Dual 1500mA, Synchronous Step-down Converters and Dual
300mA, General-purpose LDOs Input Voltage Range
-DCD1/DCD2 2.5V to 5.5V
-VINLDO 1.5V to 5.5V The 3MHz PWM switching frequency allows the use of very
small external inductors and capacitors. Both step-down
converters can enter skip mode under light load conditions to
further improve efficiency and maximize battery life. Adjustable Output Voltage
-VODCD1/VODCD2 0.8V to VIN 50ОјA IQ (Typ) with DCD1/DCD2 in Skip Mode; 20ОјA IQ (Typ)
for each Enabled LDO The ISL9307 features EN pins for each channel, thus allowing
startup delay for power sequencing. EN Pins for DCD1/DCD2 and LDO1/LDO2 Small, Thin, 4mmx4mm TQFN The ISL9307 also provides two 300mA low-dropout (LDO)
regulators. The input voltage range is 1.5V to 5.5V, which
allows them to be powered from one of the on-chip step-down
converters or directly from a battery. The default LDO power-up
output comes with factory pre-set fixed output voltage options …
