特性 Features

? Operates from a 2.7V to 5.25V supply

? Five programmable, current-mode, step-down

converters

- Dynamic voltage scaling (12.5mV steps)

- Automatic PWM/PFM transition at light load

- 0.75V to 3.3V software programmable output

voltage range

- Two converters with 1.5A output current

- One converter with 5A output current

- One 10A or two 5A output current converters

- Remote voltage sensing

- Support for external power modules to increase

DCD1 rail output current up to 20A

? 11 programmable general purpose LDOs

- Eight 200mA, and three 160mA capable LDOs

- DCD0 or DCD1 Tracking LDO

- 1.0V to 5.25V input voltage range

- 0.75V to 3.3V software programmable output

voltage range

- Always-on LDO for RTC with coin cell/SuperCap

charging capability

? Low power RTC module

- Counts seconds, minutes, hours, day, date, month

and year

? 10-bit ADC

? Host interface and system management

- Interrupt controller with mask-able interrupts,

- Reset function

- Power good monitoring

- Programmable sequencing of output rails

? High speed I2C interface, 3.4Mbit/s

? Eight programmable GPIOs

? 84-lead 7mm x 7mm x 0.8mm dual-row QFN package

描述 Description

IDTP9165 is a programmable, multiple channel power management IC

(PMIC). It includes 5 integrated, synchronous, step-down DC/DC

regulators (DCD0a, DCD0b, DCD1 through DCD3), 11 LDOs (LDO0

through LDO9, and LDOTR), a Real Time Clock (RTC), a 10-bit ADC,,

eight GPIOs (GPIO0 through GPIO7), and a high speed I2C interface (I2C

bus address: 0x4F). The product is ideal for Tablet PCs and other multi

rail applications and is specifically designed to support the power

management requirements of quad-core processor platforms.

The PMIC DC/DC regulators can support the output current requirements

for the CPU (DCD0) and SOC (DCD1) of the application processor with

up to 10A and 5A, respectively. The output voltages are programmable

from 0.7V to 1.5V.

DCD0 can be configured as a dual-phase, step-down regulator or as two

single-phase regulators (DCD0a and DCD0b). Both DCD0 and DCD1

offer remote sensing of the rail voltage and dynamic voltage scaling (DVS)

in 12.5mV steps. The DVS set output voltage slew rate is software

adjustable. Furthermore, DCD1 supports the addition of external power

modules (IDTP9167) to increase the output current to over 20A.

There are two step-down regulators (DCD2, DCD3) with output currents

of up to 1.5A. Those regulators are output voltage software adjustable in

12.5mV steps. All step down switching regulators are current-mode

controlled with a switching frequency of 2.1MHz.

Also integrated in the IDTP9165 are 11 software programmable LDOs

with a wide output voltage range and with output currents capabilities up

to 280mA. All LDOs are low noise, high PSRR, and low dropout

regulators.

The output voltages of all regulators as well as device sequencing can be

software programmable by writing to volatile registers through the I2C

interface (Default address: 0x4F) or permanently programmed by OTP

(One Time Programmable fuse cells). The PMIC operates from a single

2.7V to 5.25V supply. Additionally, the device has an internal high voltage

regulator to supply the ONKEY button and RTC circuitry. This feature

allows the complete shutdown of the pre-regulator in a dual-cell or triplecell battery system, thus increasing the battery life of the tablet.

IDTP9165 also provides a dedicated pin to sequence the DDR memory

power supply.

The package for the IDTP9165 is a 7mm x 7mm, 84 lead, dual row QFN

package. Operation through the commercial temperature range -40°C to

+85°C is guaranteed.