ADP3197 查看數據表（PDF） - Analog Devices
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ADP3197 Datasheet PDF : 32 Pages
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ADP3197
Parameter
Maximum Output Voltage
Current Limit Threshold Voltage
Current Limit Setting Ratio
DELAY TIMER
Normal Mode Output Current
Output Current in Current Limit
Threshold Voltage
SOFT START
Output Current (Startup)
Output Current (DAC Code Change)
ENABLE INPUT
Threshold Voltage
Hysteresis
Input Current
Delay Time
OD OUTPUT
Output Low Voltage
Output High Voltage
OD Pulldown Resistor
THERMAL THROTTLING CONTROL
TTSENSE Voltage Range
TTSENSE Bias Current
TTSENSE VRHOT Threshold
Voltage
TTSENSE Hysteresis
VRHOT Output Low Voltage
POWER-GOOD COMPARATOR
Overvoltage Threshold
Undervoltage Threshold
Output Low Voltage
Power-Good Delay Time
During Soft Start2
VID Code Changing
VID Code Static
Crowbar Trip Point
Crowbar Reset Point
PWM OUTPUTS
Output Low Voltage
Output High Voltage
SUPPLY
VCC
DC Supply Current
UVLO Turn On Current
UVLO Threshold Voltage
UVLO Threshold Voltage
Symbol
VCL
IDELAY
IDELAY(CL)
VDELAY(TH)
ISS(STARTUP)
ISS(DAC)
VTH(EN)
VHYS(EN)
IIN(EN)
tDELAY(EN)
VOL(OD)
VOH(OD)
VOL(VRHOT)
VPWRGD(OV)
VPWRGD(UV)
VOL(PWRGD)
VCROWBAR
VOL(PWM)
VOH(PWM)
VCC
IVCC
VUVLO
VUVLO
Conditions
VCSREF − VCSCOMP, RILIMIT = 121 kΩ
VCL/IILIMIT
IDELAY = IIREF
IDELAY(CL) = 0.25 × IIREF
During startup, ISS(STARTUP) = 0.25 × IIREF
DAC code change, ISS(DAC) = 1.25 × IIREF
EN > 950 mV, CDELAY = 10 nF
Internally limited
IVRHOT(SINK) = −4 mA
Relative to nominal DAC output; DAC = 0.5 V to 1.55 V
Relative to nominal DAC output; DAC = 0.375 V to 0.4785 V
Relative to nominal DAC output; DAC = 0.5 V to 1.55 V
Relative to nominal DAC output; DAC = 0.375 V to 0.4785 V
IPWRGD(SINK) = −4 mA
CDELAY = 10 nF
Relative to FBRTN
Relative to FBRTN
IPWM(SINK) = −400 μA
IPWM(SOURCE) = +400 μA
VSYSTEM = 12 V, RSHUNT = 340 Ω (see Figure 4)
VCC rising
VCC falling
Min
3
80
12
3.0
1.6
3
15
750
80
4
0
−135
665
200
190
−300
−310
100
1.75
4.0
4.65
9
Typ
100
82.6
15
3.75
1.7
3.75
18.75
800
100
−1
2
160
5
60
−123
710
50
150
250
250
−250
−250
150
2
250
200
1.8
300
160
5
5
6.5
4.1
Max
125
18
4.5
1.8
4.5
22.5
850
125
500
5
−111
755
300
300
310
−200
−190
300
1.85
500
5.55
25
11
Unit
V
mV
mV/V
μA
μA
V
μA
μA
mV
mV
μA
ms
mV
V
kΩ
V
μA
mV
mV
mV
mV
mV
mV
mV
mV
ms
μs
ns
V
mV
mV
V
V
mA
mA
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 tested in production.
Rev. 0 | Page 4 of 32
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