ADP3208C データシートの表示（PDF） - ON Semiconductor

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ADP3208C

7-Bit, Programmable, Dual-Phase, Mobile, CPU, Synchronous Buck Controller

ON Semiconductor 

ADP3208C

Parameter

CSREF Crowbar Voltage

Threshold

CSREF Reverse Voltage

Threshold

Symbol

VCBCSREF

VRVCSREF

PWRGD Low Voltage

PWRGD High, Leakage

Current

PWRGD Start-up Delay

VPWRGD

IPWRGD

TSSPWRGD

PWRGD Latch-off Delay

TLOFFPWRGD

PWRGD Propagation Delay3 TPDPWRGD

Crowbar Latch-off Delay2

TLOFFCB

PWRGD Masking Time

CSREF Soft-stop Resistance

CURRENT CONTROL

CURRENT-SENSE AMPLIFIER

(CSAMP)

CSSUM, CSREF Common-

Mode Range2

CSSUM, CSREF Offset Voltage

VOSCSA

CSSUM Bias Current

CSREF Bias Current

CSCOMP Voltage Range2

CSCOMP Current

CSCOMP Slew Rate

IBCSSUM

IBCSRE

ICSCOMPsource

ICSCOMPsink

Gain Bandwidth2

GBWCSA

CURRENT MONITORING

and PROTECTION

CURRENT REFERENCE

IREF Voltage

CURRENT LIMITER (OCP)

Current Limit (OCP) Threshold

VREF

VLIMTH

Current Limit Latch-off Delay

CURRENT MONITOR

Current Gain Accuracy

IMON/ILIM

IMON Clamp Voltage

VMAXMON

Conditions

Relative to FBRTN

Relative to FBRTN, Latch-off mode

CSREF falling

CSREF rising

IPWRGD(SINK) = 4 mA

VPWRDG = 5 V

Measured from CLKEN neg edge to PWRGD pos

edge

Measured from Out-off-Good-Window event to

Latch-off (switching stops)

Measured from Out-off-Good-Window event to

PWRGD neg edge

Measured from Crowbar event to Latch-off

(switching stops)

Triggered by any VID change or OCP event

EN = L or Latch-off condition

Min Typ

1.57 1.7

Max Units

1.78 V

−350

−300

−70

50

8

8

200

200

100

70

mV

−5 mV

150 mV

0.1 μA

ms

ms

ns

ns

μs

Ω

Voltage range of interest

CSREF – CSSUM TA = –10 C to 85 C

TA = 25 C

Operating Range

CSCOMP = 2 V

CSSUM forced 200 mV below CSREF

CSSUM forced 200 mV above CSREF

CCSCOMP = 10 pF, Open Loop Configuration

CSSUM forced 200 mV below CSREF

CSSUM forced 200 mV above CSREF

Non-inverting unit gain configuration

RFB = 1 kOhm

0

2

V

−1.7

−0.5

−50

−120

0.05

+1.7 mV

+0.5 mV

+50 nA

+120 nA

2

V

−750

μA

1

mA

10

V/μs

−10

V/μs

20

MHz

RREF = 80 kΩ to set IREF = 20 uA

1.55 1.6

1.65 V

Measured from CSCOMP to CSREF, RLIM = 4.5 kΩ,

2-ph configuration, PSI = H

−70

2-ph configuration, PSI = L

−32

1-ph configuration

−70

Measured from OCP event to PWRGD de-assertion

−95

−47.5

−95

8

−115 mV

−65 mV

−115 mV

ms

Measured from ILIMP to IMON

ILIM = −20 μA

ILIM = −10 μA

ILIM = −5 μA

Relative to FBRTN, ILIMP = -30 uA

Rev. 1 | Page 5 of 41 | www.onsemi.com

9.5 10

9.4 10

9

10

1.0

10.5 -

10.7 -

11 -

1.15 V

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