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ADP3190 Datasheet(PDF) 4 Page - Analog Devices

Part No. ADP3190
Description  6-Bit, Programmable 2-/3-/4-Phase, Synchronous Buck Controller
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
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ADP3190 Datasheet(HTML) 4 Page - Analog Devices

 
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ADP3190
Rev. 0 | Page 4 of 28
Parameter
Symbol
Conditions
Min
Typ
Max
Units
CURRENT LIMIT COMPARATOR
Output Voltage
Normal Mode
VILIMIT(NM)
EN > 0.8 V, RILIMIT = 250 kΩ
2.8
3
3.3
V
In Shutdown
VILIMIT(SD)
EN < 0.4 V, IILIMIT = –100 μA
400
mV
Output Current, Normal Mode
IILIMIT(NM)
EN > 0.8 V, RILIMIT = 250 kΩ
12
μA
Maximum Output Current2
60
μA
Current Limit Threshold Voltage
VCL
VCSREF – VCSCOMP, RILIMIT = 250 kΩ
105
125
145
mV
Current Limit Setting Ratio
VCL/IILIMIT
10.4
mV/μA
DELAY Normal Mode Voltage
VDELAY(NM)
RDELAY = 250 kΩ
2.8
3
3.3
V
DELAY Overcurrent Threshold
VDELAY(OC)
RDELAY = 250 kΩ
1.6
1.9
2.2
V
Latch-Off Delay Time
tDELAY
RDELAY = 250 kΩ, CDELAY = 12 nF
1.5
ms
SOFT START
Output Current, Soft Start Mode
IDELAY(SS)
During startup, DELAY < 2.8 V
15
20
25
μA
Soft Start Delay Time
tDELAY(SS)
RDELAY = 250 kΩ, CDELAY = 12 nF,
VID code = 011111
1
ms
ENABLE INPUT
Input Low Voltage
VIL(EN)
0.4
V
Input High Voltage
VIH(EN)
0.8
V
Input Current
IIL(EN)
–1
+1
μA
POWER GOOD COMPARATOR
Undervoltage Threshold
VPWRGD(UV)
Relative to nominal DAC output
–180
–250
–300
mV
Overvoltage Threshold
VPWRGD(OV)
Relative to nominal DAC output
90
150
200
mV
Output Low Voltage
VOL(PWRGD)
IPWRGD(SINK) = 4 mA
225
400
mV
Power Good Delay Time
During Soft Start
RDELAY = 250 kΩ, CDELAY = 12 nF,
VID code = 011111
1
ms
VID Code Changing
100
250
μs
VID Code Static
200
ns
Crowbar Trip Point
VCROWBAR
Relative to nominal DAC output
90
150
200
mV
Crowbar Reset Point
Relative to FBRTN
450
550
650
mV
Crowbar Delay Time
tCROWBAR
Overvoltage to PWM going low
VID Code Changing
Blanking time
100
250
μs
VID Code Static
400
ns
PWM OUTPUTS
Output Low Voltage
VOL(PWM)
IPWM(SINK) = –400 μA
160
500
mV
Output High Voltage
VOH(PWM)
IPWM(SOURCE) = +400 μA
4.0
5
V
SUPPLY—ADP3190
VSYSTEM = 12 V, RSHUNT = 240 Ω, see Figure 4
VCC
VCC
5
V
DC Supply Current
20
30
mA
UVLO Threshold Voltage
VUVLO
VCC rising
6.3
7
8.0
V
UVLO Hysteresis
0.9
V
SUPPLY—ADP3190A
VSYSTEM = 5V, RSHUNT = 10 Ω, see Figure 4
VCC
VCC
5
V
DC Supply Current
7
12
mA
UVLO Threshold Voltage
VUVLO
VCC rising
3.7
4.0
4.3
V
UVLO Hysteresis
0.9
V
1 All limits at temperature extremes are guaranteed via correlation using standard statistical quality control (SQC).
2 Guaranteed by design, not production tested. Specifications subject to change without notice.
3 Relative current matching from each phase to the average of all four phases.


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