ISL91128 datasheet(4/17 Pages) RENESAS

4 / 17 page

ISL91128

FN8732 Rev.3.00

Page 4 of 17

May 3, 2018

Absolute Maximum Ratings

Thermal Information

PVIN, VIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 6.5V

LX1, LX2. . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 6.5VDC, -2V to 7V for 10ns

FB (Adjustable Version) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 2.7V

FB (Fixed VOUT Versions) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 6.5V

GND, PGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 0.3V

All Other Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 6.5V

ESD Rating

Human Body Model (Tested per JS-001-2010) . . . . . . . . . . . . . . . . .2.5kV

Machine Model (Tested per JESD22-A115C) . . . . . . . . . . . . . . . . . 250V

Charged Device Model (Tested per JS-002-2014) . . . . . . . . . . . . . . . 1kV

Latch-Up (Tested per JESD-78D; Class 2, Level A) . . . . . . . . . . . . . . 100mA

Thermal Resistance (Typical)

JA (°C/W) JB (°C/W)

20 Ball WLCSP Package (Notes 4, 5) . . . .

Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . .+125°C

Storage Temperature Range. . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C

Pb-Free Reflow Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . see TB493

Recommended Operating Conditions

Ambient Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . -40°C to +85°C

Supply Voltage Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.8V to 5.5V

Maximum Load Current

VIN = 2.5V VOUT = 3.3V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.2ADC

CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product

reliability and result in failures not covered by warranty.

NOTES:

JA is measured in free air with the component mounted on a high-effective thermal conductivity test board with “direct attach” features. See TB379.

5. For

JB, the board temp is taken on the board near the edge of the package, on a trace at the middle of one side. See TB379.

Analog Specifications VIN= VPVIN= VEN= 3.6V, VOUT= 3.3V, L1 = 1µH, C1 = 10µF, C2 = 2x22µF, TA= +25°C. Boldface limits apply across

the operating temperature range, -40°C to +85°C and input voltage range (1.8V to 5.5V) unless specified otherwise.

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

(Note 6)

TYP

(Note 7)

MAX

(Note 6)UNIT

POWER SUPPLY

Input Voltage Range

VIN

VIN needs to be higher than the I2C pull-up voltage

1.8

5.5

VIN Undervoltage Lockout Threshold

VUVLO

Rising

1.725

1.795

Falling

1.550

1.650

VIN Supply Current

IVIN

PFM mode, no external load on VOUT (Note 8),

VIN =4.5V

µA

VIN Supply Current, Bypass

IBYP

Bypass mode, VIN = 4.5V

6.0

µA

VIN Supply Current, Shutdown

ISD

EN = GND, VIN = 3.6V

0.05

1.00

µA

OUTPUT VOLTAGE REGULATION

Output Voltage Range

VOUT

IOUT = 100mA, VIN = 3.6V

1.95

5.00

Output Voltage Accuracy

VIN = 3.7V, VOUT = 3.3V, IOUT = 0mA, PWM mode

-2

VIN = 3.7V, VOUT = 3.3V, IOUT = 1mA, PFM mode

-3

Line Regulation, PWM Mode

VOUT/

VIN

IOUT = 500mA, VOUT = 3.3V, VIN step from 2.3V to

5.5V

±5

mV/V

Load Regulation, PWM Mode

VOUT/

IOUT

VIN = 3.7V, VOUT = 3.3V, IOUT step from 0mA to

1000mA

±0.05

mV/mA

Line Regulation, PFM Mode

VOUT/

VIN

IOUT = 100mA, VOUT = 3.3V, VIN step from 2.3V to

5.5V

±12.5

mV/V

Load Regulation, PFM Mode

VOUT/

IOUT

VIN = 3.7V, VOUT = 3.3V, IOUT step from 0mA to

100mA

±0.4

mV/mA

Output Voltage Clamp

VCLAMP

Rising

5.25

5.95

Output Voltage Clamp Hysteresis

400

DC/DC SWITCHING SPECIFICATIONS

Oscillator Frequency

fSW

2.10

2.50

2.90

MHz

Minimum On-Time

tON(MIN)

LX1 Pin Leakage Current

IPFETLEAK

VIN = 3.6V

-1

µA

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