ADP5054ACPZ-R7 datasheet(5/31 Pages) AD

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Data Sheet

ADP5054

Rev. B | Page 5 of 31

BUCK REGULATOR SPECIFICATIONS

VIN = 12 V, VVREG = 5.0 V, fSW = 600 kHz for all channels, TJ = −40°C to +125°C for minimum and maximum specifications, and TA = 25°C

for typical specifications, unless otherwise noted.

Table 3.

Parameter

Symbol

Min

Typ

Max

Unit

Test Conditions/Comments

CHANNEL 1 SYNC BUCK REGULATOR

FB1 Pin

Adjustable Feedback Voltage

VFB1

0.800

Feedback Voltage Accuracy

VFB1(DEFAULT)

−0.55

+0.55

TJ = 25°C

−1.25

+1.0

0°C ≤ TJ ≤ 85°C

−1.5

+1.5

−40°C ≤ TJ ≤ +125°C

Feedback Bias Current

IFB1

0.1

µA

Adjustable voltage

SW1 Pin

High-Side Power FET On Resistance

RDS(ON)_1H

mΩ

Pin-to-pin measurement

Current-Limit Threshold

ITH(ILIM1)

5.2

6.9

8.6

RILIM1 floating

2.6

3.8

5.0

RILIM1 = 47 kΩ

7.8

10.4

12.4

RILIM1 = 22 kΩ

Minimum On Time

tMIN_ON1

115

150

fSW = 250 kHz to 2.0 MHz

Minimum Off Time

tMIN_OFF1

1/9 × tSW

fSW = 250 kHz to 2.0 MHz

Low-Side Driver, DL1 Pin

Rising Time

tRISING1

CISS = 1.2 nF

Falling Time

tFALLING1

3.4

CISS = 1.2 nF

Sourcing Resistor

tSOURCING1

Ω

Sinking Resistor

tSINKING1

1.2

Ω

Error Amplifier (EA), COMP1 Pin

EA Transconductance

gm1

310

465

620

µS

Soft Start

Soft Start Time

tSS1

2.0

CFG12 connected to ground

Programmable Soft Start Range

2.0

16.0

Hiccup Time

tHICCUP1

7 × tSS1

COUT Discharge Switch On Resistance

RDIS1

250

Ω

CHANNEL 2 SYNC BUCK REGULATOR

FB2 Pin

Adjustable Feedback Voltage

VFB2

0.800

Feedback Voltage Accuracy

VFB2(DEFAULT)

−0.55

+0.55

TJ = 25°C

−1.25

+1.0

0°C ≤ TJ ≤ +85°C

−1.5

+1.5

−40°C ≤ TJ ≤ +125°C

Feedback Bias Current

IFB2

0.1

µA

Adjustable voltage

SW2 Pin

High-Side Power FET On Resistance

RDS(ON)_2H

mΩ

Pin-to-pin measurement

Current-Limit Threshold

ITH(ILIM2)

5.2

6.9

8.6

RILIM2 = floating

2.6

3.8

5.0

RILIM2 = 47 kΩ

7.8

10.4

12.4

RILIM2 = 22 kΩ

Minimum On Time

tMIN_ON2

115

150

fSW = 250 kHz to 2.0 MHz

Minimum Off Time

tMIN_OFF2

1/9 × tSW

fSW = 250 kHz to 2.0 MHz

Low-Side Driver, DL2 Pin

Rising Time

tRISING2

CISS = 1.2 nF

Falling Time

tFALLING2

3.4

CISS = 1.2 nF

Sourcing Resistor

tSOURCING2

Ω

Sinking Resistor

tSINKING2

1.2

Ω

Error Amplifier (EA), COMP2 Pin

EA Transconductance

gm2

310

465

620

µS

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