ADP3421 datasheet(2/12 Pages) AD

2 / 12 page

REV. A

–2–

ADP3421–SPECIFICATIONS1

Parameter

Symbol

Conditions

Min

Typ

Max

Unit

SUPPLY-UVLO-POWER GOOD

Supply Current

ICC(ON)

715

ICC(UVLO)

VUVLO = 0.2 V

350

µA

VCCH

VSD = 0 V, 3.0 V

≤ VCC ≤ 3.6 V

µA

VCC UVLO Threshold

ICCH

2.9

VCCL

2.7

VCC UVLO Hysteresis

VCCHYS

Battery UVLO Threshold

VUVLOTH

1.175

1.225

1.275

Battery UVLO Hysteresis

IUVLO

VUVLO = 1.275 V

–0.3

+0.3

µA

VUVLO = 1.175 V

0.6

1.0

1.4

µA

Shutdown Input Threshold

VSDTH

3.0 V < VCC < 5.0 V

0.8

0.7

× VCC

Core Power Good Threshold

VCOREH(UP)

0.925 V < VDAC < 2.000 V

1.10

× VDAC

1.12

× VDAC V

VCOREH(DN)

1.08

× VDAC

1.10

× VDAC V

VCOREL(UP)

0.90

× V

DAC

0.92

× V

DAC

VCOREL(DN)

0.88

× VDAC

0.90

× VDAC V

PWRGD Output Voltage

VPWRGD

VCORE = VDAC

0.95

× VCC

VCC

VCORE = 0.8 VDAC

0.8

VUVLO = 0.2 V

0.4

CORE CONVERTER SOFT-START TIMER

Timing Charge Current

ISSC(UP)

VSSC = 0 V

–0.6

–1.0

–1.4

µA

Discharge Current

ISSC(DN)

VSSC = 1.7 V, VUVLO = 1.1 V

0.3

1.0

Enable Threshold

VSSCEN

150

400

Termination Threshold

VSSCTH

1.53

1.70

1.87

VID DAC

VID Input Threshold

VVID0..4

0.8

0.7

× VCC

VID Input Pull-Up Current

IVID0..4

µA

Nominal Output Voltage

VDAC

See VID Code Table I

0.925

2.000

Output Voltage Accuracy

∆VDAC/VDAC

–0.85

0.85

Output Voltage Settling Time

tDACS

µs

CORE COMPARATOR

Input Offset Voltage

VCOREOS

VREG = 1.3 V

–3

Input Bias Current

IREG

VREG = VRAMP = 1.3 V

–2

µA

Hysteresis Current

IRAMP

VCORE = VRAMP = 1.3 V

VCS– = 1.30 V, VCS+ = 1.28 V

VREG = 1.28 V

RVHYS Open

–2

µA

RVHYS = 170 k

Ω

–7

–10

–13

µA

RVHYS = 17 k

Ω

–82

–97

–113

µA

VREG = 1.32 V

RVHYS Open

–2

µA

RVHYS = 170 k

Ω

710

µA

RVHYS = 17 k

Ω

113

µA

Hysteresis Setting Reference Voltage VVHYS

1.53

1.70

1.87

Output Voltage

VOUTH

VCC = 3.0 V

2.5

3.0

VOUTL

VCC = 3.6 V

0.4

Propagation Delay Time6

tCOREPD

TA = 25

°C20

°C ≤ TA ≤ 100°C30

Rise and Fall Time

tCORER

8,7

tCOREF

(0 C

100 C, VCC = 3.3 V, VSD = VCC, VULVO = 2.0 V, VCORE = VDAC, ROUT = 100

k , COUT = 10 pF, CSSC = 1.8 nF, CSSL = 1.3 nF, CLTB = 1.5 nF, unless otherwise noted.)

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