Datasheet Intersil ISL80019A — 数据表

DATASHEET
ISL8002, ISL8002A, ISL80019, ISL80019A FN7888
Rev 4.00
July 31, 2014 Compact Synchronous Buck Regulators Features The ISL8002, ISL8002A, ISL80019 and ISL80019A 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 also have excellent stability and provide both
internal and external compensation options. VIN range 2.7V to 5.5V VOUT range is 0.6V to VIN IOUT maximum is 1.5A or 2A (see Table 1 on page 3) Switching frequency is 1MHz or 2MHz (see Table 1 on page 3) Internal or external compensation option Selectable PFM or PWM operation option The ISL8002, ISL8002A, ISL80019 and ISL80019A 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)
with a dropout of 200mV at 2A output current. Overcurrent and short circuit protection Over-temperature/thermal protection VIN Undervoltage Lockout and VOUT Overvoltage Protection Up to 95% peak efficiency Applications These devices can be configured for either PFM (discontinuous
conduction) or PWM (continuous conduction) operation at light
load. PFM provides high efficiency by reducing switching losses at
light loads and PWM reduces noise susceptibility and RF
interference. General purpose point of load DC/DC Set-top boxes and cable modems FPGA power 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 …