LP3971

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SNVS432V – JANUARY 2006 – REVISED MAY 2013

General Electrical Characteristics

(1) (continued)

entire junction temperature range for operation,

−40°C to +125°C.

(2) (3)

Symbol

Parameter

Conditions

Min

Typ

Max

Units

Temperature

160

°C

Hysteresis

20

(4)

Specified by design.Not prodution tested.

Supply Specification

(1) (2)

Maximum Output

Supply

Range (V)

Resolution (mV)

LDO_RTC

N/A

30 or 10

LDO1

1.8 to 3.3

100

300

LDO2

1.8 to 3.3

100

150

LDO3

1.8 to 3.3

100

150

LDO4

1.0 to 3.3

50-600

150

LDO5

1.0 to 3.3

50-600

370

BUCK 1

0.8 to 3.3

50-600

1600

BUCK 2

0.8 to 3.3

50-600

1600

BUCK 3

0.8 to 3.3

50-600

1600

(1)

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

(2)

All limits specified at room temperature and at temperature extremes. All room temperature limits are production tested, specified

through statistical analysis or by design. All limits at temperature extremes are specified via correlation using standard Statistical Quality

Control (SQC) methods. All limits are used to calculate Average Outgoing Quality Level (AOQL).

(3)

Specified by design. Not production tested. design.

(4)

LDO_RTC voltage can track LDO1 voltage. LP3971 has a tracking function (nIO_TRACK). When enabled, LDO_RTC voltage will track

LDO1 voltage within 200mV down to 2.8V when LDO1 is enabled

Default Voltage Options

Version

LP3971SQ-B410

LP3971SQ-D510

LP3971Q-F211

LP3971SQ-W416

Enable

Version B

Version C

Version A

Version SW

LDO_RTC

--

2.8

--

2.8

--

2.8

--

2.8

3.0 (w/

3.3 (w/

LDO1

SYS_EN

Trkg)

SYS_EN

Trkg)

SYS_EN

3.3

SYS_EN

3.0

LDO2

SYS_EN

3.0

SYS_EN

3.3

SYS_EN

3.3

SYS_EN

3.3

LDO3

SYS_EN

3.0

SYS_EN

3.3

SYS_EN

3.3

PWR_EN

2.5

LDO4

PWR_EN

1.3

PWR_EN

1.3

SYS_EN

1.8

SYS_EN

1.0

LDO5

PWR_EN

1.1

PWR_EN

1.1

PWR_EN

3.3

PWR_EN

1.0

BUCK1

PWR_EN

1.4

PWR_EN

1.4

PWR_EN

1.5

PWR_EN

1.2

BUCK2

SYS_EN

3.0

SYS_EN

3.3

SYS_EN

2.5

SYS_EN

3.0

BUCK3

SYS_EN

1.8

SYS_EN

1.8

SYS_EN

1.8

SYS_EN

1.8

Version

LP3971SQ-N510

LP3971SQ-P55A

LP3971SQ-B510

LP3971SQ-O509

Enable

set to default 00 on system

enable delay

LDO_RTC

Track

2.8

No Track

2.8

Track

2.8

NoTrack

2.8

LDO1

SYS_EN

3.3

SYS_EN

3.3

SYS_EN

3.0

SYS_EN

3.3

LDO2

SYS_EN

3.0

SYS_EN

3.3

SYS_EN

3.0

SYS_EN

3.3

LDO3

SYS_EN

3.0

SYS_EN

3.3

SYS_EN

3.0

PWR_EN

3.3

LDO4

PWR_EN

1.3

SYS_EN

1.35

PWR_EN

1.3

SYS_EN

1.25

LDO5

PWR_EN

1.1

PWR_EN

1.8

PWR_EN

1.1

SYS_EN

1.25

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