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ADP3207C Datasheet(PDF) 6 Page - ON Semiconductor

Part No. ADP3207C
Description  7-Bit Programmable, Multi-Phase Mobile, CPU Synchronous Buck Controller
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Manufacturer  ONSEMI [ON Semiconductor]
Direct Link  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

ADP3207C Datasheet(HTML) 6 Page - ON Semiconductor

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ADP3207C
http://onsemi.com
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ELECTRICAL CHARACTERISTICS VCC = 5.0 V, FBRTN = GND, EN = VCC, VVID = 0.50 V to 1.5000 V, PSI = 1.05 V,
DPRSLP = GND, DPRSTP= 1.05 V, LLSET = CSREF, TA = −10°C to 100°C, unless otherwise noted (Note 1). RREF = 80 kW.
Current entering a pin (sunk by the device) has a positive sign.
Parameter
Unit
Max
Typ
Min
Conditions
Symbol
VOLTAGE MONITORING AND PROTECTION − Power Good
CSREF Reverse Voltage
Threshold
VRVCSREF
Relative to FBRTN, Latchoff mode:
CSREF Falling
CSREF Rising
−350
−300
−70
−5.0
mV
PWRGD Low Voltage
VPWRGD
IPWRGD(SINK) = 4 mA
85
150
mV
PWRGD High, Leakage
Current
IPWRGD
VPWRDG = 5.0 V
1.0
mA
PWRGD Startup Delay
TSSPWRGD
Measured from CLKEN neg edge to PWRGD
Pos Edge
8.0
ms
PWRGD Latchoff Delay
TLOFFPWRGD
Measured from Out−off−Good−Window event
to Latchoff (switching stops)
8.0
ms
PWRGD Propagation Delay
TPDPWRGD
Measured from Out−off−Good−Window event
to PWRGD neg edge
200
ns
Crowbar Latchoff Delay
(Note 2)
TLOFFCB
Measured from Crowbar event to Latchoff
(switching stops)
200
ns
PWRGD Masking Time
Triggered by any VID change or OCP event
100
ms
CSREF Soft−Stop
Resistance
EN = L or Latchoff condition
70
W
CURRENT CONTROL − Current Sense Amplifier (CSAMP)
CSSUM, CSREF Common−Mode Range
(Note 2)
Voltage range of interest
0
2.0
V
CSSUM, CSREF Offset
Voltage
VOSCSA
CSREF − CSSUM, TA = −10°C to 85°C
TA = 25°C
−1.7
−0.5
+1.7
+0.5
mV
CSSUM Bias Current
IBCSSUM
−50
+50
nA
CSREF Bias Current
IBCSREF
−50
+50
nA
CSCOMP Voltage Range (Note 2)
Operating Range
0.05
2.0
V
CSCOMP Current
ICSCOMPsource
ICSCOMPsink
CSCOMP = 2.0 V
CSSUM forced 200 mV below CSREF
CSSUM forced 200 mV above CSREF
−750
1.0
mA
mA
CSCOMP Slew Rate
CCSCOMP = 10 pF, Open Loop Configuration
CSSUM forced 200 mV below CSREF
CSSUM forced 200 mV above CSREF
10
−10
V/ms
Gain Bandwidth (Note 2)
GBWCSA
Non−inverting unit gain configuration
RFB = 1 kW
20
MHz
CURRENT MONITORING AND PROTECTION
Current Reference
IREF Voltage
VREF
RREF = 80 kW to set IREF = 20 mA
1.55
1.6
1.65
V
Current Limiter (OCP)
Current Limit Threshold
VLIMTH
Measured from CSCOMP to CSREF,
RLIM = 4.5 kW,
2−ph configuration, PSI = H
2−ph configuration, PSI = L
Measured from CSCOMP to CSREF,
RLIM = 4.5 kW,
3−ph configuration, PSI = H
3−ph configuration, PSI = L
1−ph configuration
−70
−30
−70
−15
−70
−90
−45
−90
−30
−90
−115
−65
−115
−50
−115
mV
Current Limit Latchoff Delay
Measured from OCP event to PWRGD
deassertion
8.0
ms
1. All limits at temperature extremes are guaranteed via correlation using standard Statistical Quality Control (SQC).
2. Guaranteed by design or bench characterization, not production tested.


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