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ADP3211 Arkusz danych(PDF) 6 Page - ON Semiconductor

Numer części ADP3211
Szczegółowy opis  7-Bit, Programmable, Single-Phase, Synchronous Buck Controller
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Producent  ONSEMI [ON Semiconductor]
Strona internetowa  http://www.onsemi.com
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ADP3211 Arkusz danych(HTML) 6 Page - ON Semiconductor

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ADP3211, ADP3211A
http://onsemi.com
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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
Units
Max
Typ
Min
Conditions
Symbol
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
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
(Note 2)
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
TMSkPWRGD
Triggered by any VID change
100
ms
CSREF Soft−Stop Resistance
EN = L or Latchoff condition
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
VOSCSA
CSREF – CSSUM, TA = 0°C to 85°C
TA = 25°C
−1.4
−0.4
+1.4
+0.4
V
CSFB Bias Current
IBCSFB
−50
+50
nA
CSREF Bias Current
IBCSREF
−2.0
2.0
mA
CSCOMP Voltage Range
(Note 2)
Voltage range of interest
0.05
2.0
V
CSCOMP Current
ICSCOMPsource
ICSCOMPsink
CSCOMP = 2.0 V
CSFB forced 200 mV below CSREF
CSFB forced 200 mV above CSREF
−650
1.0
mA
mA
CSCOMP Slew Rate (Note 2)
CCSCOMP = 10 pF, CSREF = VDAC,
Open loop configuration
CSFB forced 200 mV below CSREF
CSFB 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 (OCP)
Threshold
VLIMTH
Measured from CSCOMP to CSREF
RLIM = 4.5 kW
−130
−100
−70
mV
Current Limit Latchoff Delay
Measured from OCP event to PWRGD
de−assertion
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
9.4
9.0
10
10
10
10.6
10.8
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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