ADP5056ACCZ-R7 datasheet(5/31 Pages) AD

5 / 31 page

Data Sheet

ADP5056

Rev. 0 | Page 5 of 31

Parameter

Symbol

Min

Typ

Max

Unit

Test Conditions/Comments

Leakage Current for PWRGD Pin

IPWRGD_LEAKAGE

0.1

µA

Output Low Voltage for PWRGD Pin

VPWRGD_LOW

150

PWRGD pin current (IPWRGD) = 1 mA

THERMAL SHUTDOWN (TSD)

Thermal Shutdown Threshold

TSHDN

175

°C

Thermal Shutdown Hysteresis

THYS

°C

tSET is the setting time programmed by CFG2.

BUCK REGULATOR SPECIFICATIONS

VIN = 12 V, VREG = 4.8 V, fSW = 600 kHz for all channels, TJ = −40°C to +150°C for minimum and maximum specifications, and TA = 25°C

for typical specifications, unless otherwise noted.

Table 2.

Parameter

Symbol

Min

Typ

Max

Unit

Test Conditions/Comments

CHANNEL 1 BUCK REGULATOR

Continuous Output Current

Determined by CFG1 pin configuration

(see Table 6), CFG1 resistor (RCFG1) = 0 Ω

3.5

Determined by CFG1 pin configuration

(see Table 6), RCFG1 = open

FB1 Pin

Feedback Voltage

600

Feedback Voltage Accuracy

VFB1_DEFAULT

−0.25

+0.25

TJ = 25°C

Feedback Reference Voltage of

Channel 1 (VFB1) = 600 mV Default

−0.62

+0.69

−40°C ≤ TJ ≤ +125°C

−0.62

+0.83

−40°C ≤ TJ ≤ +150°C

Feedback Bias Current

IFB1

0.1

µA

Adjustable voltage

SW1 Pin

High-Side Power Field Effect Transistor

(FET) On Resistance

RDSON_HS(1)

mΩ

Pin to pin measurement

Low-Side Power FET On Resistance

RDSON_LS(1)

mΩ

Pin to pin measurement

Valley Current-Limit Threshold

ITH(ILIM1)

9.4

Current limit of Channel 1 (ILIM1) = 7 A,

TJ = 25°C

4.4

ILIM1 = 3.5 A, TJ = 25°C

Negative Current-Limit Threshold

ITH(ILIM1-NEG)

−5.0

Minimum On Time

tMIN_ON1

fSW = 250 kHz to 2500 kHz

Minimum Off Time

tMIN_OFF1

120

150

fSW = 250 kHz to 2500 kHz

Error Amplifier (EA), COMP1 Pin

EA Transconductance

gm1

330

350

365

µS

Soft Start

Soft Start Time

tSS1

0.83 × tSET

tSET = 2.6 ms when RCFG2 = 0 Ω

Hiccup Time

tHICCUP1

7 × tSET

Output Capacitor (COUT) Discharge Switch

On Resistance

RDIS1

CHANNEL 2 BUCK REGULATOR

Continuous Output Current

Determined by CFG1 pin configuration

(see Table 6), RCFG1 = 0 Ω

3.5

Determined by CFG1 pin configuration

(see Table 6), RCFG1 = open

FB2 Pin

Feedback Voltage

600

Feedback Voltage Accuracy

VFB2_DEFAULT

−0.25

+0.25

TJ = 25°C

Feedback Reference Voltage of

Channel 2 (VFB2) = 600 mV Default

−0.62

+0.69

−40°C ≤ TJ ≤ +125°C

−0.62

+0.83

−40°C ≤ TJ ≤ +150°C

Feedback Bias Current

IFB2

0.1

µA

Adjustable voltage

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