A6727 datasheet(7/29 Pages) STMICROELECTRONICS

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A6727

Electrical specifications

3.2

Electrical characteristics

VCC = 12 V; TA = - 40 °C to 85 °C, unless otherwise specified.

Table 5. Electrical characteristics

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

Recommended operating conditions

VCC

Device supply voltage

See Figure 1

4.1

13.2

VIN

Conversion input voltage

13.2

VCC < 7.0 V

19.0

Supply current and power-on

ICC

VCC supply current

UGATE and LGATE = open

IBOOT

BOOT supply current

UGATE = open; PHASE to GND

0.5

UVLO

VCC turn-on

VCC rising

4.1

Hysteresis

0.2

Oscillator

FSW

Main oscillator accuracy

TA = 25 °C

270

300

330

kHz

250

300

350

kHz

DVOSC

PWM ramp amplitude

1.5

dMAX

Maximum duty cycle

Reference

Output voltage accuracy

VOUT = 0.8 V, TA = 25 °C

-1

VOUT = 0.8 V

-1.5

1.5

Error amplifier

DC gain(1)

120

GBWP

Gain-bandwidth product(1)

MHz

Slew rate(1)

8V/

μs

IFB

Input bias current

Sourced from FB

100

DIS

Disable threshold

COMP falling

0.43

0.5

Gate drivers

IUGATE

HS source current

BOOT - PHASE = 5 V to 12 V

1.5

RUGATE

HS sink resistance

BOOT - PHASE = 5 V to 12 V

1.1

ILGATE

LS source current

VCC = 5 V to 12 V

1.5

RLGATE

LS sink resistance

VCC = 5 V to 12 V

0.65

Overcurrent protection

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