MAX8707 데이터 시트보기 (PDF) - Maxim Integrated
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MAX8707
Maxim Integrated
MAX8707 Datasheet PDF : 37 Pages
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Multiphase, Fixed-Frequency Controller for
AMD Hammer CPU Core Power Supplies
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1. VCC = VSHDN = 5V, OSC = REF, VVPS = VFBS = VCRSN = VCRSP = VCSP_ = 1.20V, VSUSV = 0.8V, OFS = SUS =
GNDS = PGND = SKIP = GND, D0–D4 set for 1.20V (D0–D4 = 01110). TA = -40°C to +85°C, unless otherwise specified.) (Note 3)
PARAMETER
SYMBOL
CONDITIONS
MIN
MAX UNITS
ILIM(PK) Peak Current-Limit
CSP_ - CSN_,
VPKLIMIT = 30mV
24
Threshold Voltage (Positive)
VPKLIMIT RILIM(PK) = RTRC x
8V / VLIM(PK)
VPKLIMT = 50mV
40
36
mV
60
ILIM(PK) Peak Current-Limit
Threshold Voltage (Negative)
CSP_ - CSN_,
RILIM(PK) = RTRC x 8V / VPKLIMIT,
-60
-40
mV
VPKLIMIT = 50mV
ILIM(PK) Idle Current-Limit
Threshold Voltage (Skip Mode)
Current-Sense Input Current
Current-Sense Common-Mode
Input Range
VIDLE
CSP_ - CSN_, VSKIP ≥ 1.2V,
RILIM(PK) = RTRC x 8V / VPKLIMIT,
VPKLIMIT = 50mV
CSP_, CRSP
CSN_, CRSN
CRSP, CRSN, CSP_, CSN_
2
8
mV
-0.2
+0.2
µA
-1.0
+1.0
0
2
V
Phase Disable Threshold
CSP4
3
VCC
- 0.4
V
CRS Sense Input Disable
Threshold
CRSP
3
VCC
- 0.4
V
LOGIC AND I/O
Logic Input High Voltage
Logic Input Low Voltage
D0–D4 Logic Input High Voltage
D0–D4 Logic Input Low Voltage
VIH
SHDN, SUS
VIL
SHDN, SUS
2.4
V
0.8
V
0.8
V
0.4
V
OSC 3-Level Input Logic Levels
SKIP Input Logic Levels
VOSC
VSKIP
High (VCC)
Medium (REF)
Low (GND)
High
Low (GND)
VCC
- 0.4
1.8
1.2
V
2.2
0.4
V
0.8
Logic Output High Voltage
VOH
PWM_, DRSKP; ISOURCE = 3mA
VCC
- 0.4
V
Note 2: VROK is blanked during the transitions, when the internal target is being slewed. See the Output-Voltage Transition Timing
section. VROK is reenabled in tBLANK (20µs) after the transition is completed.
Note 3: Specifications to TA = -40°C are guaranteed by design and are not production tested.
8 _______________________________________________________________________________________
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