HTSSOP16 Ver la hoja de datos (PDF) - STMicroelectronics

Número de pieza

componentes Descripción

Fabricante

HTSSOP16

4 A continuous (more than 5 A pulsed) step-down switching regulator with synchronous rectification

STMicroelectronics 

L5988D

4

Electrical characteristics

Electrical characteristics

VCC = 12 V, TJ = 25 °C unless otherwise specified.

Symbol

Table 5. Electrical characteristic

Parameter

Test condition

VCC

Operating input voltage range

Vout = 0.6 V; Iout = 3 A

RDS(on) HS High side MOSFET on resistance Iout = 1.0 A

RDS(on) LS Low side MOSFET on resistance Iout = 1.0 A

IL HIGH SIDE

IL LOW SIDE

fSW

fSW ADJ

D

Maximum peak limiting current

Maximum valley limiting current

Switching frequency

adjusted switching frequency

Duty cycle

ILIM-ADJ = float

ILIM-ADJ = float

FSW = floating

RFSW PULL DWN = 27 k

Selectable under voltage lockout (UVLO)

Turn ON Vcc threshold

3.3 V BUS Turn OFF Vcc threshold

Hysteresis

Turn ON Vcc threshold

12 V BUS Turn OFF Vcc threshold

Hysteresis

DC characteristic

ISS

Soft-start current

Device ON level

INH

Device OFF level

VSS/INH = 2 V

VSS/INH = 0

Iq

Iq st-by

Quiescent current

Total stand-by quiescent current

Duty cycle = 0; VFB = 1 V

Dynamic characteristic (see Figure 1 on page 1)

VFB Voltage feedback in regulation 2.9 V < VCC < 18 V

Error amplifier

VOH

High level output voltage

VOL

Low level output voltage

VFB = 0.2 V; SS floating

VFB = 1.0 V

Min. Typ. Max. Unit

2.9

18 V

75 85 95 m

(1) 111 120 132 m

62 67 72 m

(1) 92 100 106 m

3.6 4 4.4 A

4.14 4.6 5.06 A

360 400 440 kHz

1000

kHz

0

100 %

2.7 2.8 V

2.4 2.5

V

200

mV

8 8.6 V

6.8 7

V

1

V

22

A

5

A

0.8

V

0.3 V

3 mA

35 A

0.595 0.6 0.605

(1) 0.592 0.6 0.609 V

3.1

V

0.1 V

DocID15324 Rev 4

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