LP8725 datasheet(21/46 Pages) TI1

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LP8725

www.ti.com

SNVS618G – DECEMBER 2009 – REVISED MAY 2013

CURRENT CONSUMPTION

Unless otherwise noted, VIN1=VIN2=VIN3=VINB1=VINB2=VINLILO1=VINLILO2=3.6V; CLDOX=1µF; CBUCKOUT=CBUCKIN=4.7 µF;

CVIN1–3=CVINLILO1=CVINLILO2=2.2 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= -40 to +125°C.

(1)

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

IQ(STANDBY)

Standby Current

All outputs disabled EN = 0

3.3

IQ(SLEEP)

Current in SLEEP Mode at

Outputs disabled via control registers

no load

Only Buck1 and LDO1 enabled

All outputs enabled

205

280

µA

IQ(IDLE)

Current at no load

Outputs disabled via control registers

145

210

Only Buck1 and LDO1 enabled

205

All outputs enabled

420

600

(1)

Min and Max limits are specified by design, test or statistical analysis. Typical numbers are not verified, but do represent the most likely

norm.

THERMAL SHUTDOWN

The Thermal Shutdown (TSD) function monitors the chip temperature (TJ) to protect the chip from temperature damage

caused, e.g., by excessive power dissipation.

(1)

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

TSD

160

°C

TSD Hysteresis

°C

(1)

Min and Max limits are specified by design, test or statistical analysis. Typical numbers are not verified, but do represent the most likely

norm.

UNDER-VOLTAGE LOCK OUT

This device has Under-Voltage Lock Out (UVLO) that checks VIN1-pin voltage before starting Power On sequence. UVLO is

also checked during Power On sequence. If the VDD voltage is less than UVLO threshold the PMU will not Power On. After

the PMU successfully passed Power On sequence UVLO is not monitored.

(1)

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

CONFIG = 0

2.3

UVLO Threshold

VIN1 rising

CONFIG = 1

2.825

3.0

3.185

VUVLO

CONFIG = 0

400

Hysteresis

CONFIG = 1

800

(1)

Min and Max limits are specified by design, test or statistical analysis. Typical numbers are not verified, but do represent the most likely

norm.

LOGIC AND CONTROL

Unless otherwise noted, VIN1=VIN2=VIN3=VINB1 =VINB2=VINLILO1=VINLILO2=3.6V; CLODX=1µF; CBUCKOUT=CBUCKIN=4.7 µF,

CVIN1–3=CVINLILO1CVINLILO2=2.2 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= -40 to +125°C.

(1)

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

Logic and Control Inputs

VIL

Input Low Level

EN, SCL, SDA, DVS, PS_HOLD,

0.4

PWR_ON BUCK2_EN, LDO3_EN

VIH

Input High Level

EN, SCL, SDA, DVS, PS_HOLD

1.2

PWR_ON, BUCK2_EN, LDO3_EN

IIL

Input Low Level Current

EN, SCL, SDA, DVS, PS_HOLD

PWR_ON, DVS, DEFSEL, CONFIG,

µA

BUCK2_EN, LDO3_EN

VIL = 0V

(1)

Min and Max limits are specified by design, test or statistical analysis. Typical numbers are not verified, but do represent the most likely

norm.

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