LP3941A datasheet(5/32 Pages) NSC

5 / 32 page

Absolute Maximum Ratings (Notes 1,

If Military/Aerospace specified devices are required,

please contact the National Semiconductor Sales Office/

Distributors for availability and specifications.

CHG-IN

−0.3V to +12V

IN1–6, BATT, SDA, SCL, ON,

HF-PWR, PS-HOLD, SYS,

COMP1_IN, COMP2_IN,

CHG_IN, BSNS, V

O5-EN,

O6-EN, LED1–3,

RTC_ALARM, BU_BAT, V

RTC,

RESET, BATT

SENSE.

−0.3V to +6V

REFBYP, ON, PS-HOLD,

COMP1_OUT, COMP2_OUT

to GND

−0.3V to +V

BAT + 0.3V

O1 to GND

−0.3V to +V

IN1 + 0.3V

O2,VO3 to GND

−0.3V to +V

IN2 + 0.3V

O4,VO5 to GND

−0.3V to +V

IN3 + 0.3V

O6,VO7 to GND

−0.3V to +V

IN4 + 0.3V

O8,VO9 to GND

−0.3V to +V

IN5 + 0.3V

O10,VO11 to GND

−0.3V to +V

IN6 + 0.3V

GND to GND SLUG

±0.3V

Maximum Continuous Power Dissipation

D_MAX) (Note 3)

3.07W

Junction Temperature (T

J-MAX)

150˚C

Storage Temperature Range

−65˚C to +150˚C

Maximum Lead Temperature

(Soldering)

(Note 4)

ESD Ratings (Note 5)

All Pins

2 kV HBM

200V MM

Operating Ratings (Notes 1, 2)

3.0V to 6.0V

0V to (V

IN + 0.3V)

Junction Temperature (T

J) Range

−40˚C to +125˚C

Ambient Temperature (T

A) Range

(Note 6)

−40˚C to +85˚C

Thermal Properties (Note 7)

Junction-to-Ambient Thermal

Resistance (

JA)

26˚C/W

Electrical Characteristics

Unless otherwise noted, V

IN = 2.5V to 5.5V, CIN (IN1–6) = 4.7 µF, COUT (VO1 and VO9) = 4.7 µF, COUT (VO2,VO3,VO7,VO8,

O10 and VO11) = 2.2 µF, COUT (VO4 to VO6) = 1 µF, COUT (VRTC)=1µF ceramic, CBYP = 0.1 µF. Typical values and limits

appearing in normal type apply for T

J = 25˚C. Limits appearing in boldface type apply over the entire junction temperature

range for operation, −40 to +125˚C. (Notes 2, 8, 9, 10)

Symbol

Parameter

Condition

Min

Typ

Max

Units

Shutdown Supply Current

BATT = 2.1V, UVLO on, internal

logic generator on, V

RTC off, all other

circuits off.

µA

No Load Supply Current, LDO

1&3&5on

BATT = 3.6V, LDOs VO1,VO3 and

O5 on, back-up battery charger and

RTC on, charger disconnected,

comparator1&2on.

310

µA

No Load Supply Current

BATT = 3.6V, All LDOs on, charger

disconnected.

500

µA

BATTERY UNDER VOLTAGE LOCKOUT

UVLO-R

Under Voltage Lock-Out

BATT Rising

2.91

3.1

3.32

UVLO-F

Under Voltage Lock-Out

BATT Falling

2.15

2.49

2.85

TH-POR

Power-On Reset Threshold

BATT Falling Edge

1.7

2.3

THERMAL SHUTDOWN

Threshold

Hysteresis

160

˚C

OUTPUT CAPACITORS

OUT

Capacitance

ESR

500

µF

Ω

LOGIC AND CONTROL INPUTS

Input Low Level

PS-HOLD, ON, BSNS, HF-PWR,

RTC_ALARM, SDA, SCL, V

O5-EN,

O6-EN.

2.5V

≤ V

BATT

≤ 5.5V

0.4

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