RE46C191

DS20005225H-page 4

 2013-2023 Microchip Technology Inc. and its subsidiaries

1.0

ELECTRICAL CHARACTERISTICS

1.1

Absolute Maximum Ratings†

Supply Voltage ................................................................................................................................................... VDD = 5.5V; VBST = 13V

Input Voltage Range Except FEED and TEST................................................................................................ VIN = -0.3V to VDD + 0.3V

FEED Input Voltage Range ................................................................................................................................... VINFD = -10V to +22V

TEST Input Voltage Range...................................................................................................................... VINTEST = -0.3V to VBST + 0.3V

LX Voltage................................................................................................................................................................. VLX = -0.3V to 13V

Maximum IRCAP Voltage.................................................................................................................................................. VIRCAP = 5.5V

Input Current Except FEED.................................................................................................................................................... IIN = 10 mA

Continuous Operating Current (HS, HB and VBST) ................................................................................................................IO = 40 mA

Continuous Operating Current (IRED) ...............................................................................................................................IOIR = 300 mA

Storage Temperature .........................................................................................................................................TSTG = -55°C to +125°C

ESD Human Body Model ..................................................................................................................................................... VHBM = 2 kV

ESD Machine Model .............................................................................................................................................................VMM = 175V

1.2

Electrical Specifications

†Notice: Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the

device. This is a stress rating only and functional operation of the device at those or any other conditions above

those indicated in the operational listings of this specification is not implied. Exposure to maximum rating

conditions for extended periods may affect device reliability.

DC ELECTRICAL CHARACTERISTICS

DC Electrical Characteristics: Unless otherwise indicated, all parameters apply at TA = -10°C to +60°C, VDD = 3V, 

VBST = 4.2V, Typical Application (unless otherwise noted)(1,2,3)

Parameter

Symbol

Test

Pin

Min.

Typ.

Max.

Units

Conditions

Supply Voltage

VDD

VDD

2.0

—

5.0

V

Operating

Supply Current

IDD1

VDD

—

1

2

µA

Standby, inputs low, no loads,

boost off, no smoke check

Standby Boost



Current

IBST1

VBST

—

100

—

nA

Standby, inputs low, no loads,

boost off, no smoke check

IRCAP Supply



Current

IIRCAP

IRCAP

—

500

—

µA

During smoke check

Boost Voltage

VBST1

VBST

3.0

3.6

4.2

V

IRCAP charging for smoke

check, GLED operation,

IOUT = 40 mA

VBST2

VBST

8.5

9.6

10.7

V

No local alarm,



RLED operation,

IOUT = 40 mA, IO as an input

Note 1: Wherever a specific VBST value is listed under test conditions, the VBST is forced externally with the 

inductor disconnected and the DC-DC converter NOT running.

2: Typical values are for design information only.

3: Limits over the specified temperature range are not production tested and are based on characterization

data. Unless otherwise stated, production test is at room temperature with guardbanded limits.

4: Not production tested.