ISL8274M datasheet(13/81 Pages) RENESAS

13 / 81 page

FN8931 Rev.1.00

Page 13 of 81

Jan 4, 2018

ISL8274M

2. Specifications

2.4

Electrical Specifications

VIN = VDD = 12V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C. Boldface limits apply across the

operating temperature range, -40°C to +85°C.

Parameter

Symbol

Test Conditions

Min

(Note 16)

Typ

Max

(Note 16)

Unit

Input and Supply Characteristics

Input Supply Current for

Controller

IDD

VIN = VDD = 12V, VOUT = 0V,

module not enabled

6V Internal Reference Supply

Voltage

VR6

5.5

6.1

6.6

5V Internal Reference Supply

VR5

IVR5 < 5mA

4.5

5.2

5.5

2.5V Internal Reference Supply

V25

2.25

2.5

2.75

Internal LDO Output Voltage

VCC

5.3

Internal LDO Output Current

IVCC

VIN = VDD = 12V, VCC connected

to VDRV, module enabled

Input Supply Voltage for

Controller Read Back

Resolution

VDD_READ_RES

±20

Input Supply Voltage for

Controller Read Back Total Error

(Note 19)

VDD_READ_ERR

PMBus Read

±2

% FS

Output Characteristics

Output Voltage Adjustment

Range

VOUT_RANGE

0.54

5.5

Output Voltage Set-Point

Resolution

VOUT_RES

Configured using PMBus

±0.025

%VOUT

Output Voltage Set-Point

Accuracy (Notes 17, 19)

VOUT_ACCY

Includes line, load, and

temperature

(-20°C ≤ TA ≤ +85°C)

-1.2

1.2

Output Voltage Read Back

Resolution

VOUT_READ_RES

±0.15

% FS

Output Voltage Read Back Total

Error (Note 19)

VOUT_READ_ERR

PMBus read

-2

% FS

Output Ripple Voltage

VOUT_RIPPLE

VOUT = 1.5V, COUT = 1 x 470µF

POSCAP + 12 x 100µF ceramic

Output Current Read Back

Resolution

IOUT_READ_RES

ISENSE_CONFIG default setting

0.2

Output Current Range (Note 18)

IOUT_RANGE

Per channel

Output Current Read Back Total

Error

IOUT_READ_ERR

PMBus read at max load

VOUT = 1.5V

±3

Soft-Start and Sequencing

Delay Time from Enable to VOUT

Rise

tON_DELAY

Configured using PMBus

2300

tON_DELAY Accuracy

tON_DELAY_ACCY

±2

Output Voltage Ramp-Up Time

tON_RISE

Configured using PMBus

0.5

120

Output Voltage Ramp-Up Time

Accuracy

tON_RISE_ACCY

±250

µs

Delay Time from Disable to

VOUT Fall

tOFF_DELAY

Configured using PMBus

2300

tOFF_DELAY Accuracy

tOFF_DELAY_ACCY

±2

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