ADP3192A datasheet(4/32 Pages) AD

Part #	ADP3192A

Description	8-Bit Programmable 2- to 4-Phase Synchronous Buck Controller

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ADP3192A

Rev. 0 | Page 4 of 32

Symbol

Conditions

Min

Typ

Max

Unit

Parameter

ILIMIT Voltage

VILIMIT

RILIMIT = 121 kΩ (VILIMIT = (IILIMIT × RILIMIT))

1.09

1.21

1.33

V

Maximum Output Voltage

3

V

Current-Limit Threshold Voltage

VCL

VCSREF − VCSCOMP, RILIMIT = 121 kΩ

80

100

125

mV

Current-Limit Setting Ratio

VCL/VILIMIT

82.6

mV/V

DELAY TIMER

Normal Mode Output Current

IDELAY

IDELAY = IIREF

12

15

18

μA

Output Current in Current Limit

IDELAY(CL)

IDELAY(CL) = 0.25 × IIREF

3.0

3.75

4.5

μA

Threshold Voltage

VDELAY(TH)

1.6

1.7

1.8

V

SOFT START

Output Current

ISS

During startup, ISS = IIREF

12

15

18

μA

ENABLE INPUT

Threshold Voltage

VTH(EN)

800

850

900

mV

Hysteresis

VHYS(EN)

80

100

125

mV

Input Current

IIN(EN)

−1

μA

Delay Time

tDELAY(EN)

EN > 950 mV, CDELAY = 10 nF

2

ms

OD OUTPUT

Output Low Voltage

VOL(OD)

160

500

mV

Output High Voltage

VOH(OD)

4

5

V

OD Pull-Down Resistor

60

kΩ

THERMAL THROTTLING CONTROL

TTSENSE Voltage Range

Internally limited

0

5

V

TTSENSE Bias Current

−133

−123

−113

μA

TTSENSE VRFAN Threshold Voltage

1.06

1.105

1.15

V

TTSENSE VRHOT Threshold Voltage

765

810

855

mV

TTSENSE Hysteresis

50

mV

VRFAN Output Low Voltage

VOL(VRFAN)

IVRFAN(SINK) = −4 mA

150

300

mV

VRHOT Output Low Voltage

VOL(VRHOT)

IVRHOT(SINK) = −4 mA

150

300

mV

POWER-GOOD COMPARATOR

Undervoltage Threshold

VPWRGD(UV)

Relative to nominal DAC output

−400

−350

−300

mV

Overvoltage Threshold

VPWRGD(OV)

Relative to nominal DAC output

100

150

200

mV

Output Low Voltage

VOL(PWRGD)

IPWRGD(SINK) = −4 mA

150

300

mV

Power-Good Delay Time

During Soft Start2

CDELAY = 10 nF

2

ms

VID Code Changing

100

250

μs

VID Code Static

200

ns

Crowbar Trip Point

VCROWBAR

Relative to nominal DAC output

100

150

200

mV

Crowbar Reset Point

Relative to FBRTN

320

375

430

mV

Crowbar Delay Time

tCROWBAR

Overvoltage to PWM going low

VID Code Changing

100

250

μs

VID Code Static

400

ns

PWM OUTPUTS

Output Low Voltage

VOL(PWM)

IPWM(SINK) = −400 μA

160

500

mV

Output High Voltage

VOH(PWM)

IPWM(SOURCE) = 400 μA

4.0

5

V

SUPPLY

VSYSTEM = 12 V, RSHUNT = 340 Ω (see Figure 2)

VCC2

VCC

4.65

5

5.55

V

DC Supply Current

IVCC

VSYSTEM = 13.2 V, RSHUNT = 340 Ω

25

mA

UVLO Turn-On Current

6.5

11

mA

UVLO Threshold Voltage

VUVLO

VCC rising

9

V

UVLO Turn-Off Voltage

VCC falling

4.1

V

1 All limits at temperature extremes are guaranteed via correlation using standard statistical quality control (SQC).

2 Guaranteed by design or bench characterization, not tested in production.

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