Data Sheet

LT3097

SPECIFICATIONS

analog.com

Rev. 0 | 7 of 45

Table 1. Electrical Characteristics (Continued)

Parameter

Test Conditions/Comments

Min

Typ

Max

Unit

PGFBN PIN

Trip Point

PGFBN trip-point rising

288

300

312

mV

Hysteresis

PGFBN trip-point hysteresis

7

mV

Current (IPGFBN)

VINN = –2.3 V, VPGFBN = –300 mV

30

100

nA

PGP PIN

Output Low Voltage

PGP current (IPGP) = 100 µA

30

100

mV

Leakage Current

PGP voltage (VPGP) = 20 V

1

µA

PGN PIN

Output Low Voltage

PGN current (IPGN) = 100 µA

17

50

mV

Leakage Current

PGN voltage (VPGN) = 20 V

1

µA

POSITIVE MINIMUM LOAD REQUIRED17

VOUTP < 1 V

10

µA

NEGATIVE MINIMUM LOAD REQUIRED18

VOUTN > –1.5 V

10

µA

POSITIVE THERMAL SHUTDOWN

TJ rising

165

°C

Hysteresis

8

°C

NEGATIVE THERMAL SHUTDOWN

TJ rising

167

°C

Hysteresis

8

°C

POSITIVE START-UP TIME

VOUTP(NOM) = 5 V, ILP = 500 mA, CSETP = 0.47 µF, VINP =

6 V, VPGFBP = 6 V

55

ms

VOUTP(NOM) = 5 V, ILP = 500 mA, CSETP = 4.7 µF, VINP = 6

V, VPGFBP = 6 V

550

ms

VOUTP(NOM) = 5 V, ILP = 500 mA, CSETP = 4.7 µF, VINP =

6 V, Positive Power-Good 1 resistance (RPGP1) = 50 kΩ,

Positive Power-Good 2 resistance (RPGP2) = 700 kΩ (with

positive fast start-up to 90% of VOUTP)

10

ms

NEGATIVE START-UP TIME

RSETN = 49.9 kΩ, VOUTN(NOM) = –5 V, ILN = 500 mA,

CSETN = 0.47 µF, VINN = –6 V, VPGFBN = –6 V

55

ms

RSETN = 49.9 kΩ, VOUTN(NOM) = –5 V, ILN = 500 mA,

CSETN = 4.7 µF, VINN = –6 V, VPGFBN = –6 V

550

ms

RSETN = 49.9 kΩ, VOUTN(NOM) = –5 V, ILN = 500 mA,

CSETN = 4.7 µF, VINN = –6 V, Negative Power-Good 1

resistance (RPGN1) = 50 kΩ, Negative Power-Good 2

resistance (RPGN2) = 700 kΩ (with negative fast start-up

to 90% of VOUTN)

10

ms

POSITIVE THERMAL REGULATION

10 ms pulse

–0.01

%/W

NEGATIVE THERMAL REGULATION

10 ms pulse

–0.01

%/W

POSITIVE REVERSE CURRENT

Input

VINP = –20 V, VENP/UVP = 0 V, VOUTP = 0 V, VSETP = 0 V

150

µA

Output

VINP = 0 V, VOUTP = 5 V, SETP = open, TA = 25°C

14

25

µA

1 The ENP/UVP pin threshold must be met to ensure device operation.

2 The ENN/UVN pin threshold must be met to ensure device operation.

3 The maximum TJ limits operating conditions. The regulated output-voltage specification does not apply for all possible combinations of input voltage and output current,

especially due to the internal current-limit foldback, which starts to decrease current limit at VINP – VOUTP > 12 V. If operating at the maximum output current, limit the

input-voltage range. If operating at the maximum input voltage, limit the output-current range.

4 The maximum TJ limits operating conditions. The regulated output-voltage specification does not apply for all possible combinations of input voltage and output current,

especially due to the internal current-limit foldback, which starts to decrease the current limit at VOUTN – VINN > 7 V. If operating at the maximum output current, limit the

input-voltage range. If operating at the maximum input voltage, limit the output-current range.

5 OUTSP connects directly to OUTP.

6 OUTSN connects directly to OUTN.