ISL98607

2. Specifications

FN8421 Rev.1.00

Page 6 of 29

Jun.3.19

2.4

Electrical Specifications

VIN = 3.7V, unless otherwise noted. Typical specifications are characterized at TA = +25°C unless otherwise noted. Boldface limits apply

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

Parameter

Symbol

Test Conditions

Min

(Note 8)Typ

Max

(Note 8)Unit

General

VIN Supply Voltage Range

VIN

2.8

4.4

V

VIN Supply Current

IIN

ENP = ENN = 3.7V

Enabled, LXP not switching

620

900

µA

VIN Supply Current When Shutdown

ISHUTDN

ENP = ENN = 0V

1

3

µA

Undervoltage Lockout Threshold

VUVLO

VIN rising

2.40

2.52

2.65

V

Undervoltage Lockout Hysteresis

VUVLO_HYS

5ms falling

216

mV

Boost Regulator (VBST)

VBST Output Voltage

VVBST

Register VBST_OUT = 0x00, no load

5.15

V

Boost nFET Current Limit

ILIM_VBST

1.2

1.4

1.8

A

Low-Side Switch ON-Resistance

rON_VBSTH

TA = +25°C, ILOAD_VBST = 100mA,

LXP to PGND

137

mΩ

High-Side Switch ON-Resistance

rON_VBSTL

TA = +25°C, ILOAD_VBST = 100mA,

LXP to VBST

220

mΩ

LXP Leakage Current

IL_LXP

VLXP = 6V, ENP = ENN = 0V

10

µA

Boost Minimum Duty Cycle

DMIN

Boost frequency = 1.45MHz

12.5

%

Boost Maximum Duty Cycle

DMAX

Boost frequency = 1.45MHz

91

%

Boost Switching Frequency

fSWV_VBST

Boost frequency = default

1.3

1.45

1.6

MHz

Boost Soft-Start Time

tSS_VBST

CVBST = 10µF (not derated), VIN >VUVLO

0.7

2

ms

Negative Regulator (VN)

VN Output Voltage

VVN

VN_OUT = 0x00, no load

-5

V

VN Output Voltage Accuracy

VACC_VN

VN_OUT = 0x00, VBST_OUT = 0x00,

-30mA < ILOAD_VN <0mA

-2

2

%

Charge Pump Switching Frequency

fSW_VN

CP Frequency = default, 50% duty cycle

1.3

1.45

1.6

MHz

Charge Pump Leakage Current

IL_CP

CP pin, CP = 6V, ENN = 0V

10

µA

VN Discharge Resistance

RDCH_VN

VN = -1V

35

Ω

VN Soft-Start Time

tSS_VN

0.7

2

ms

Positive Regulator (VP)

VP Output Voltage

VVP

VBST_OUT = 0x00, No Load

5

V

VP Output Voltage Accuracy

VACC_VP

VP_OUT = 0x00, VBST_OUT = 0x00,

0mA < ILOAD_VP <30mA

-2

2

%

VP Dropout Voltage

VDRP_VP

ILOAD_VP = 100mA

100

mV

VP Leakage Current

IL_VP

VP pin, VP = 0V, ENP = 0V

2

µA

VP Discharge Resistance

RDCH_VP

VP = 1V

80

Ω

VP Soft-Start

tSS_VP

0.7

2

ms

Protection

Thermal Shutdown Temperature

TOFF

Die temperature (rising) when the device will

disable/shutdown all outputs until it cools by

THYS°C

130

°C

Thermal Shutdown Hysteresis

THYS

Die temperature below TOFF°C when the

device will re-enable the outputs after

shutdown

10

°C

VP Undervoltage Protection Threshold

VUVP_VP

0.6 x VP

V

VN Undervoltage Protection Threshold

VUVP_VN

0.6 x VN

V