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ADP3207C Datasheet(PDF) 7 Page - ON Semiconductor

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

ADP3207C Datasheet(HTML) 7 Page - ON Semiconductor

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ADP3207C
http://onsemi.com
7
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
CURRENT MONITOR
Current Gain Accuracy
IMON/ILIM
Measured from ILIMP to IMON
ILIM = −20 mA
ILIM = −10 mA
9.3
9.2
10
10
10.7
10.8
IMON Clamp Voltage
VMAXMON
Relative to FBRTN, ILIMP = −30 mA
1.05
1.15
V
PULSE WIDTH MODULATOR − Clock Oscillator
RT Voltage
VRT
RT = 125 kW, VVID = 1.4000 V
See also VRT(VVID) formula
1.12
1.2
1.28
V
PWM Clock Frequency
Range (Note 2)
fCLK
Operating Range
0.3
3.0
MHz
PWM Clock Frequency
fCLK
TA = +25°C, VVID = 1.2000 V
RT = 73 kW
RT = 125 kW
RT = 180 kW
1150
500
1450
850
630
1750
780
kHz
RAMP GENERATOR
RAMP Voltage
VRAMP
EN = high, IRAMP = 30 mA
EN = low
0.9
1.0
VIN
1.1
V
RAMP Current Range
(Note 2)
IRAMP
EN = high
EN = low, RAMP = 19 V
1.0
−0.5
100
+0.5
mA
PWM COMPARATOR
PWM Comparator Offset
(Note 2)
VOSRPM
VRAMP − VCOMP
−3.0
3.0
mV
RPM COMPARATOR
RPM Current
IRPM
VVID = 1.2 V, RT = 125 kW
See also IRPM(RT) formula
−8.8
mA
RPM Comparator Offset
(Note 2)
VOSRPM
VCOMP − (1 +VRPM)
−3.0
3.0
mV
EPWM CLOCK SYNC
Trigger Threshold (Note 2)
Relative to COMP sampled TCLK earlier
3−phase configuration
2−phase configuration
1−phase configuration
300
350
400
mV
SWITCH AMPLIFIER
SW Common Mode Range
(Note 2)
VSW(X)CM
Operating Range for current sensing
−600
+200
mV
SW Input Resistance
RSW(X)
SWX = 0 V
20
32
45
kW
ZERO CURRENT SWITCHING COMPARATOR
SW ZCS Threshold
VDCM(SW1)
DCM mode, DPRSLP = 3.3 V
−4.0
mV
Masked Off Time
tOFFMSKD
Measured from PWM neg edge to PWM Pos
Edge at max frequency of operation
700
ns
SYSTEM I/O BUFFERS VID[6:0], PSI INPUTS
Input Voltage
Refers to driving signal level
Logic low, Isink w 1 mA
Logic high, Isource v −5 mA
0.7
0.3
V
Input Current
V = 0.2 V
VID[6:0], DPRSLP (active pulldown to GND)
PSI (active pullup to VCC)
−1.0
+2.0
mA
VID Delay Time (Note 2)
Any VID edge to FB change 10%
200
ns
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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