LP8720

SNVS575B – JULY 2008 – REVISED MAY 2013

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Operating Ratings

(1) (2)

VBATT = VINB, VBATT

2.7 to 4.5V

VIN1, VIN2

2.5V to VBATT

All input-only pins

0V to VBATT

Junction Temperature (TJ)

-40 to 125ºC

Ambient Temperature (TA)

-40 to 85ºC

Maximum Power Dissipation (TA = 70ºC)

(3)

1.2 W

(1)

Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Ratings are conditions under which

operation of the device is specified. Operating Ratings do not imply ensured performance limits. For specified performance limits and

associated test conditions, see the Electrical Characteristics tables.

(2)

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

(3)

Like the Absolute Maximum power dissipation, the maximum power dissipation for operation depends on the ambient temperature. The

1.2W rating for DSBGA 20 appearing under Operating Ratings results from substituting the maximum junction temperature for operation,

125°C, for TJ, 70°C for TA, and 45°C/W for θJA into (eg. 1) above. More power can be dissipated at ambient temperatures below 70°C.

Less power can be dissipated at ambient temperatures above 70°C. The maximum power dissipation for operation can be increased by

22mW for each degree below 70°C, and it must be de-rated by 22 mW for each degree above 70°C.

Thermal Properties

(1)

Junction-to-Ambient Thermal

Resistance (

θJA)

(Jedec Standard Thermal PCB)

45°C/W

20-bump DSBGA package

(1)

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.

Current Consumption

Unless otherwise noted, VVBATT = VVINB =VVIN1 = VVIN2 = 3.6V, GND = GNDB = 0V, CVBATT = CVIN1= CVIN2 = 2.2 µF, CVINB = 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= -40 to +125°C

(1)

Limit

Parameter

Test Conditions

Typ

Units

Min

Max

IQ(STANDBY)

Battery Standby Current

VBATT = 3.6V

0.7

5

µA

IQ(SLEEP)

Battery Current in SLEEP

BUCK and all LDO’s enabled

190

270

µA

Mode @ 0 load

IQ(SLEEP)

Battery Current in SLEEP

LDO1, LDO2, LDO3 and LDO4 enabled

170

µA

Mode @ 0 load

IQ(SLEEP)

Battery Current in SLEEP

LDO3 enabled

100

150

µA

Mode @ 0 load

IQ(SLEEP)

Battery Current in SLEEP

LDO1 and BUCK enabled

100

µA

Mode @ 0 load

IQ

Battery Current @ 0 load

BUCK and all LDO’s enabled

270

400

µA

IQ

Battery Current @ 0 load

LDO1, LDO2, LDO3 and LDO4 enabled

230

µA

IQ

Battery Current @ 0 load

LDO3 enabled

120

200

µA

IQ

Battery Current @ 0 load

LDO1 and BUCK enabled

120

µA

(1)

All limits are specified. All electrical characteristics having room-temperature limits are tested during production with TJ = 25°C. All hot

and cold limits are ensured by correlating the electrical characteristics to process and temperature variations and applying statistical

process control.

10

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