ISL6262A datasheet(7/28 Pages) RENESAS

7 / 28 page

ISL6262A

FN6343 Rev 1.00

Page 7 of 28

December 23, 2008

PGOOD - Power good open-drain output. Connect externally

with 680

 to VCCP or 1.9k to 3.3V.

PSI# - Current indicator input. When asserted low, indicates a

reduced load-current condition and initiates single-phase

operation.

PMON - Analog output. PMON is proportional to the product of

Vsen and droop voltage.

RBIAS - 147k resistor to GND sets internal current reference.

VR_TT# - Thermal overload output indicator with open-drain

output. Over-temperature pull-down resistance is 10

.

NTC - Thermistor input to VRTT# circuit and a 60µA current

source is connected internally to this pin.

SOFT - A capacitor from this pin to GND sets the maximum

slew rate of the output voltage. SOFT is the non-inverting input

of the error amplifier.

OCSET - Overcurrent set input. A resistor from this pin to VO

sets DROOP voltage limit for OC trip. A 10µA current source is

connected internally to this pin.

VW - A resistor from this pin to COMP programs the switching

frequency (for example, 6.82k

 300kHz).

COMP - This pin is the output of the error amplifier.

FB - This pin is the inverting input of error amplifier.

FB2 - There is a switch between FB2 pin and the FB pin. The

switch is closed in single-phase operation and is opened in two

phase operation. The components connecting to FB2 are to

adjust the compensation in single phase operation to achieve

optimum performance.

VDIFF - This pin is the output of the differential amplifier.

VSEN - Remote core voltage sense input.

RTN - Remote core voltage sense return.

DROOP - Output of the droop amplifier. The voltage level on

this pin is the sum of VO and the droop voltage.

DFB - Inverting input to droop amplifier.

VO - An input to the IC that reports the local output voltage.

VSUM - This pin is connected to the summation junction of

channel current sensing.

VIN - Battery supply voltage. It is used for input voltage

feed-forward to improve input line transient performance.

GND - Signal ground. Connect to local controller ground.

VDD - 5V control power supply.

ISEN2 - Individual current sharing sensing for Channel 2. If

ISEN2 is pulled to 5V, phase 2’s gate signals are disabled.

ISL6262A is then configured in always-1-phase mode.

ISEN1 - Individual current sharing sensing for Channel 1.

N/C - Not connected. Grounding this pin to signal ground in the

practical layout.

BOOT2 - This pin is the upper gate driver supply voltage for

phase 2. An internal boot strap diode is connected to the

PVCC pin.

UGATE2 - Upper MOSFET gate signal for phase 2.

PHASE2 - The phase node of phase 2. Connect this pin to the

source of the Channel 2 upper MOSFET.

PGND2 - The return path of the lower gate driver for phase 2.

LGATE2 - Lower-side MOSFET gate signal for phase 2.

PVCC - 5V power supply for gate drivers.

LGATE1 - Lower-side MOSFET gate signal for phase 1.

PGND1 - The return path of the lower gate driver for phase 1.

PHASE1 - The phase node of phase 1. Connect this pin to the

source of the Channel 1 upper MOSFET.

UGATE1 - Upper MOSFET gate signal for phase 1.

BOOT1 - This pin is the upper-gate-driver supply voltage for

phase 1. An internal boot strap diode is connected to the

PVCC pin.

VID0, VID1, VID2, VID3, VID4, VID5, VID6 - VID input with

VID0 is the least significant bit (LSB) and VID6 is the most

significant bit (MSB).

VR_ON - Digital enable input. A logic high signal on this pin

enables the regulator.

DPRSLPVR - Deeper sleep enable signal. A logic high signal

on this pin indicates the micro-processor is in deeper-sleep

mode and also indicates a slow C4 entry or exit rate with 41µA

discharging or charging the SOFT capacitor.

DPRSTP# - Deeper sleep slow wake up signal. A logic low

signal on this pin indicates the micro-processor is in

deeper-sleep mode.

CLK_EN# - Digital output for system clock. Goes active 13

clks after Vcore is within 10% of Boot voltage.

3V3 - 3.3V supply voltage for CLK_EN#.

ISL6262A Datasheet(PDF) 7 Page - Renesas Technology Corp

ISL6262A Datasheet(HTML) 7 Page - Renesas Technology Corp

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28

Datasheet Download

Link URL