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ADP3207 Datasheet(PDF) 3 Page - ON Semiconductor

Part No. ADP3207
Description  CPU Synchronous Buck Controller
Download  29 Pages
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Maker  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
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ADP3207 Datasheet(HTML) 3 Page - ON Semiconductor

 
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ADP3207
Rev. 1 | Page 3 of 29 | www.onsemi.com
SPECIFICATIONS
VCC = 5 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 = 0°C to 100°C, unless otherwise noted.1
Table 1.
Parameter
Symbol
Conditions
Min
Typ
Max
Units
VOLTAGE ERROR AMPLIFIER
Output Voltage Range2
VCOMP
0.85
4.0
V
VID DAC DC Accuracy
VFB − VVID
Measured at FB, relative to VVID, see Figure 2
−8
+8
mV
VFB(BOOT)
Measured at end of start-up
1.192
1.200
1.208
V
Load Line Positioning DC Accuracy
VFB − VVID
Measured at FB, relative to VVID, LLSET – CSREF = −80 mV
−78
−80
−82
mV
Differential Nonlinearity2
−1
+1
LSB
Line Regulation
ΔVFB
VCC = 4.75 V to 5.25 V
0.05
%
Input Bias Current
IFB
−1
+1
μA
Output Current
ICOMP
FB forced to VOUT – 3%
3
mA
Gain Bandwidth Product
GBW(ERR)
COMP = FB
20
MHz
Slew Rate
CCOMP = 10 pF
25
V/
μs
LLSET Input Voltage Range2
VLLSET
Relative to CSREF
−200
+200
mV
LLSET Input Bias Current
ILLSET
−100
+100
nA
FBRTN Current
IFBRTN
70
400
μA
VID DAC INPUTS
Input Low Voltage
VIL
VIDX
0.5
0.3
V
Input High Voltage
VIH
VIDX
0.7
0.5
V
Input Current
IIN(VID)
−1
μA
VID Transition Delay Time2
VID change to FB change
400
ns
OSCILLATOR
Frequency Range2
fOSC
PSI = DPRSTP = 1.05 V, DPRSLP = GND
0.3
3
MHz
Frequency Setting
fPHASE
TA = +25°C, VVID = 1.2000 V, RT = 215 k
Ω
155
200
245
kHz
TA = +25°C, PWM3 = VCC, VVID = 1.2000 V, RT = 215 k
Ω
300
kHz
TA = +25°C, PWM2 = VCC, VVID = 1.2000 V, RT = 215 k
Ω
600
kHz
RAMPADJ Voltage
VRAMPADJ
IRAMPADJ = 60 μA
0.9
1.1
1.2
V
RAMPADJ Input Current Range2
IRAMPADJ
In normal mode
1
60
120
μA
In shutdown, or in UVLO, RAMPADJ = 19 V
−1
+1
μA
RPM
RT Voltage
VRT
RT = 215 k
Ω to GND, VVID = 1.4000 V
1.08
1.2
1.32
V
VRPM Reference Voltage
VVRPM
IVRPM = 0
.95
1
1.05
V
IVRPM = 120 μA
1.0
1.03
1.10
V
RRPM Output Current
IRRPM
VVID = 1.2 V, RT = 215 k
Ω
−5.5
μA
RPM Comparator Offset
VOS(RPM)
VOS(RPM) = VCOMP − VRRPM, PSI = GND
1
mV
CURRENT-SENSE AMPLIFIER
Offset Voltage
VOS(CSA)
CSSUM – CSREF
−1.0
+1.0
mV
Input Bias Current
IBIAS(CSSUM)
−50
+50
nA
Gain Bandwidth Product
GBW(CSA)
10
MHz
Slew Rate
CCSCOMP = 10 pF
10
V/
μs
Input Common-Mode Range2
CSSUM and CSREF
0
3.5
V
Output Voltage Range2
0.05
2.0
V
Output Current
ICSCOMP
Sinking Current
470
μA


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