ADP3211 查看數據表（PDF） - ON Semiconductor
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ADP3211 Datasheet PDF : 32 Pages
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ADP3211, ADP3211A
ELECTRICAL CHARACTERISTICS (VCC = PVCC = 5.0 V, FBRTN = GND = PGND = 0 V, H = 5.0 V, L = 0 V, VVID = VDAC = 1.2 V,
TA = −10°C to 100°C, unless otherwise noted. (Note 1) Current entering a pin (sunk by the device) has a positive sign.
Parameter
Symbol
Conditions
Min Typ Max Units
VOLTAGE MONITORING and PROTECTION − Power Good
PWRGD High Leakage
Current
IPWRGD
VPWRDG = 5.0 V
1.0
mA
PWRGD Startup Delay
TSSPWRGD
Measured from CLKEN neg edge to PWRGD
8.0
ms
pos edge
PWRGD Latchoff Delay
TLOFFPWRGD Measured from Out−off−Good−Window event
8.0
ms
to Latchoff (switching stops)
PWRGD Propagation Delay
TPDPWRGD
Measured from Out−off−Good−Window event
200
ns
(Note 2)
to PWRGD neg edge
Crowbar Latchoff Delay
(Note 2)
TLOFFCB
Measured from Crowbar event to Latchoff
(switching stops)
200
ns
PWRGD Masking Time
CSREF Soft−Stop Resistance
TMSkPWRGD
Triggered by any VID change
EN = L or Latchoff condition
100
ms
60
W
CURRENT CONTROL − Current Sense Amplifier (CSAMP)
CSFB, CSREF Common−Mode Range
(Note 2)
Voltage range of interest
0
2.0
V
CSFB, CSREF Offset Voltage
CSFB Bias Current
CSREF Bias Current
CSCOMP Voltage Range
(Note 2)
VOSCSA
IBCSFB
IBCSREF
CSREF – CSSUM, TA = 0°C to 85°C
TA = 25°C
Voltage range of interest
−1.4
−0.4
−50
−2.0
0.05
+1.4
V
+0.4
+50
nA
2.0
mA
2.0
V
CSCOMP Current
CSCOMP Slew Rate (Note 2)
ICSCOMPsource
ICSCOMPsink
CSCOMP = 2.0 V
CSFB forced 200 mV below CSREF
CSFB forced 200 mV above CSREF
CCSCOMP = 10 pF, CSREF = VDAC,
Open loop configuration
CSFB forced 200 mV below CSREF
CSFB forced 200 mV above CSREF
−650
mA
1.0
mA
V/ms
10
−10
Gain Bandwidth (Note 2)
GBWCSA
Non−inverting unit gain configuration
RFB = 1 kW
CURRENT MONITORING AND PROTECTION − Current Reference
IREF Voltage
VREF
RREF = 80 kW to set IREF = 20 mA
CURRENT LIMITER (OCP)
Current Limit (OCP)
Threshold
VLIMTH
Measured from CSCOMP to CSREF
RLIM = 4.5 kW
Current Limit Latchoff Delay
Measured from OCP event to PWRGD
de−assertion
20
MHz
1.55
1.6
1.65
V
−130 −100 −70
mV
8.0
ms
CURRENT MONITOR
Current Gain Accuracy
IMON/ILIM
Measured from ILIM to IMON
ILIM = −20 mA
ILIM = −10 mA
ILIM = −5 mA
9.5
10
10.6
9.4
10
10.8
9.0
10
11
IMON Clamp Voltage
VMAXMON
Relative to FBRTN, ILIM = −30 mA
RIMON = 8 kW
1.0
1.15
V
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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