SPSB100 datasheet(76/213 Pages) STMICROELECTRONICS

76 / 213 page

Symbol

Parameter

Condition

Min

Typ

Max

Unit

Vout_PG_buck1

Output power-good threshold

monitor range

Vout_OV_buck1_err

Output overvoltage threshold

monitor range

103

107

111

tbuck1_PG_TO(2)

Output power-good time-out

4.8

7.5

tbuck1_UV_TO(2)

Vout undervoltage time-out filter

µs

tbuck1_OV_TO

(2)

Vout overvoltage time-out filter

µs

RDSON_HS_buck1_25(3)

HS switch ON resistance at 1.5 A

VIN12 = 14 V

Tj = 25 °C

0.095 0.12

Ω

RDSON_HS_buck1_130

HS switch ON resistance at 1.5 A

VIN12 = 14 V

Tj = 130 °C

0.165

Ω

RDSON_LS_buck1_25

LS switch ON resistance at 1.5 A

VIN12 = 14 V

Tj = 25 °C

0.095 0.12

Ω

RDSON_LS_buck1_130

LS switch ON resistance at 1.5 A

VIN12 = 14 V

Tj = 130 °C

0.165

Ω

Ilimit_buck1_000

Peak switching current limit at

VIN12 = 14 V

BUCK1_IPEAK = 000

1.7

2.3

Ilimit_buck1_001

Peak switching current limit at

VIN12 = 14 V

BUCK1_IPEAK = 001

2.125

2.5

2.875

Ilimit_buck1_010

Peak switching current limit at

VIN12 = 14 V

BUCK1_IPEAK = 010

2.55

3.45

Ilimit_buck1_011

Peak switching current limit at

VIN12 = 14 V

BUCK1_IPEAK = 011

2.975

3.5

4.025

Ilimit_buck1_100

Peak switching current limit at

VIN12 = 14 V

BUCK1_IPEAK = 100

3.2

4.6

Ilimit_buck1_101

Peak switching current limit at

VIN12 = 14 V

BUCK1_IPEAK = 101

3.5

4.5

5.175

Ilimit_buck1_11X

Peak switching current limit at

VIN12 = 14 V

BUCK1_IPEAK = 11X

3.75

5.75

tbuck1_OC_TO(2)

Over current filter time

125

150

200

µs

Tsoftstart_buck1_00(3)

Soft start time slope when start-up

BUCK1_SS_VALUE = 00

9.9

16.5

23.1 V/ms

Tsoftstart_buck1_01(3)

Soft start time slope when start-up

BUCK1_SS_VALUE = 01

4.95

8.25

11.9 V/ms

Tsoftstart_buck1_10(3)

Soft start time slope when start-up

BUCK1_SS_VALUE = 10

1.98

3.3

4.62 V/ms

Tsoftstart_buck1_11(3)

Soft start time slope when start-up

BUCK1_SS_VALUE = 11

0.99

1.65

2.31 V/ms

Fsw_buck1_0

Switching frequency

BUCK1_FREQ = 0

2.0

2.4

2.8

MHz

Fsw_buck1_1

Switching frequency

BUCK1_FREQ = 1

333

400

470

kHz

Fspread_buck1_24(3)

Spread spectrum range (Enable/

disable by BUCK1_SPREAD_ENA)

Fsw_buck1 = 2.4 MHz

-8

Fspread_buck1_04(3)

Spread spectrum range (enable/

disable by BUCK1_SPREAD_ENA)

Fsw_buck1 = 400 kHz

-20

+20

RPD_OFF_buck1

Pull-down resistor in off

Vout = 3.3 V

Ω

Ibuck1_LP

Output current in low power mode

VIN12 = 14 V

100

Vbuck1_LP_00

Output voltage in low power mode

BUCK1_PU_VALUE = 00

Line/load transients not included

3.08

3.3

3.51

SPSB100

Electrical characteristics

DS14640 - Rev 2

page 76/213

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