LP3913 datasheet(10/70 Pages) TI1

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LP3913

SNVS489I – NOVEMBER 2006 – REVISED SEPTEMBER 2013

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INPUTS ELECTRICAL CHARACTERISTICS: POWERACK, ONOFF, LDO2EN, BUCK1EN

Unless otherwise noted, VDD = 5V, VBATT = 3.6V. CBATT = 4.7 µF, CCHG_IN = 10 µF. Typical values and limits appearing in

normal type apply for TJ = 25°C. Limits appearing in boldface type apply over the entire junction temperature range for

operation, TJ = 0°C to +125°C.

(1) (2) (3) (4) (5) (6)

Symbol

Parameter

Conditions

Min

Typ

Max

Units

VIL

Input Low Level

0.4

VIH

Input High Level

1.4

ILEAKAGE

Input Leakage

−1

µA

(1)

All voltages are with respect to the potential at the GND pin.

(2)

Junction-to-ambient thermal resistance is highly application and board-layout dependent. In applications where high maximum power

dissipation exists, special care must be paid to thermal dissipation issues in board design.

(3)

Min and Max limits are specified by design, test, or statistical analysis. Typical numbers represent the most likely norm.

(4)

Low ESR Surface-Mount Ceramic Capacitors (MLCCs) are used in setting electrical characteristics.

(5)

Typical values and limits appearing in normal type for TJ = 25°C. Limits appearing in boldfacetype apply over the entire junction

temperature range for operation,

−40°C to +125°C.

(6)

LDO2EN, BUCK1EN, and USBSUSP have weak internal pull downs while pins POWERACK, ONOFF do not have this.

LDO1: LOW DROPOUT LINEAR REGULATORS

Unless otherwise noted, VIN1 = 3.6V, IMAX = 150 mA, VOUT = Default Value, CVDD = 10 µF, CLDO1 = 1.0 µF, ESR = 5 mΩ–500

Ω, CVREFH = 100 nF. Typical values and limits appearing in normal type apply for TJ = 25°C. Limits appearing in boldface

type apply over the entire junction temperature range for operation, 0°C to +125°C.

Symbol

Parameter

Conditions

Min

Typ

Max

Units

VIN1

Operational Voltage Range

2.5

6.0

VOUT Range

Output Voltage

TA = 25°C

1.2

3.3

Programming Range

1.2V–3.3V in 100 mV Steps

VOUT Accuracy

Output Voltage Accuracy

1 mA

≤ IOUT ≤ IMAX, Over

Full Line and Load

−3

Regulation.

VOUT = Default Value.

ΔVOUT

Line Regulation

VIN = (VOUT + 500 mV) to

5.5V, Load Current = IMAX

Load Regulation

VIN = 3.6V,

Load Current = 1 mA to IMAX

ISC

Short Circuit Current Limit

VOUT = 0V

600

750

VIN – VOUT

Dropout Voltage

Load Current = IMAX

150

PSRR

Power Supply Ripple

F = 10 kHz, Load Current =

Rejection

IMAX

RSHUNT

LDO Output Impedance

LDO Disabled, VOUT =

200

Ω

Default Value

LDO2: LOW DROPOUT LINEAR REGULATOR

Unless otherwise noted VIN1 = 3.6V, IMAX = 150 mA, VOUT = Default Value, CVDD = 10.0 µF, CLDO2 = 1.0 µF, ESR = 5 mΩ–500

Ω, CVREFH = 100 nF. Typical values and limits appearing in normal type apply for TJ = 25°C. Limits appearing in boldface

type apply over the entire junction temperature range for operation, 0°C to +125°C.

Symbol

Parameter

Conditions

Min

Typ

Max

Units

VIN2

Operational Voltage Range

2.5

6.0

VOUT Range

Output Voltage

TA = 25°C

1.3

3.3

Programming Range

1.3V–3.3V in 100 mV Steps

VOUT Accuracy

Output Voltage Accuracy

1 mA

≤ IOUT ≤ IMAX, Over

(Default VOUT)

Full Line and Load

−3

Regulation.

ΔVOUT

Line Regulation

VIN = (VOUT + 500 mV) to

5.5V,

Load Current = IMAX

Load Regulation

VIN = 3.6V,

Load Current = 1 mA to IMAX

ISC

Short Circuit Current Limit

VOUT = 0V

600

750

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