Datasheet Intersil ISL80015A — 数据表

DATASHEET
ISL80020, ISL80020A, ISL80015, ISL80015A FN6692
Rev 3.00
June 5, 2015 Compact Synchronous Buck Converters
The ISL80020, ISL80020A, ISL80015 and ISL80015A are highly
efficient, monolithic, synchronous step-down DC/DC converters
that can deliver up to 2A of continuous output current from a 2.7V
to 5.5V input supply. They use peak current mode control
architecture to allow very low duty cycle operation. They operate
at either 1MHz or 2MHz switching frequency, thereby providing
superior transient response and allowing for the use of small
inductors. They have excellent stability. Features VIN range 2.7V to 5.5V IOUT maximum is 1.5A or 2A (see Table 1 on page 2) Switching frequency is 1MHz or 2MHz (see Table 1 on page 2) Overcurrent and short circuit protection Over-temperature/thermal protection The ISL80020, ISL80020A, ISL80015 and ISL80015A integrate
very low rDS(ON) MOSFETs in order to maximize efficiency. In
addition, since the high-side MOSFET is a PMOS, the need for a
Boot capacitor is eliminated, thereby reducing external
component count. They can operate at 100% duty cycle
(at 1MHz). Negative current protection The device is configured in PWM (pulse width modulation) for
fast transient response, which helps reduce the output noise
and RF interference. Up to 95% peak efficiency Power-good and enable 100% duty cycle (1MHZ) Internal soft-start and soft-stop VIN undervoltage lockout and VOUT overvoltage protection Applications These devices are offered in a space saving 8 pin 2mmx2mm
TDFN lead free package with exposed pad for improved thermal
performance. The complete converter occupies less than
64mm2 area. General purpose POL Related Literature Game console Industrial, instrumentation, and medical equipment Telecom and networking equipment UG026, “ISL800xxxDEMO1Z Demonstration Boards User
Guide” 100 ISL80015, ISL80020 EN PG 1 C1 …