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| 型号： | MAX8707ETL+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 7/37页 |
| 文件大小： | 0K |
| 描述： | IC CNTRLR MULTIPHASE 40TQFN |
| 标准包装： | 2,500 |
| 应用： | 控制器，AMD Hammer CPU 电源 |
| 输入电压： | 4.5 ~ 5.5 V |
| 输出数： | 4 |
| 输出电压： | 0.8 ~ 1.55 V |
| 工作温度： | 0°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 40-WFQFN 裸露焊盘 |
| 供应商设备封装： | 40-TQFN-EP（6x6） |
| 包装： | 带卷 (TR) |
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Multiphase, Fixed-Frequency Controller for
AMD Hammer CPU Core Power Supplies
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1. V CC = V SHDN = 5V, OSC = REF, V VPS = V FBS = V CRSN = V CRSP = V CSP_ = 1.20V, V SUSV = 0.8V, OFS = SUS =
GNDS = PGND = SKIP = GND, D0 – D4 set for 1.20V (D0 – D4 = 01110). T A = -40 ° C to +85 ° C , unless otherwise specified.) (Note 3)
PARAMETER
Output Undervoltage-Protection
Threshold
SYMBOL
V UVP
CONDITIONS
Measured at VPS with respect to 70% of the
unloaded nominal output voltage
MIN
-40
MAX
+40
UNITS
mV
Undervoltage, measured at VPS with
VROK Threshold
respect to 87.5% of the unloaded output
voltage, falling edge, 15mV hysteresis
Overvoltage, measured at VPS with respect
to 112.5% of the unloaded output voltage,
rising edge, 15mV hysteresis
-40
-40
+40
+40
mV
VROK Output Low Voltage
I SINK = 3mA
0.4
V
V CC Undervoltage-Lockout
Threshold
V UVLO(VCC)
Rising edge, hysteresis = 20mV, PWM_
disabled below this level
4.10
4.45
V
DROOP AND TRANSIENT RESPONSE
DC Droop Amplifier Offset
DC Droop Amplifier
? I VPS / (N x ? V CRS ); V VPS = V CRSN = 1.2V,
-2
+2
mV
Transconductance
G m(VPS)
V CRSP - V CRSN = -60mV to +60mV,
190
210
μS
(CRS Sense Enabled)
DC Droop Amplifier
N = number of phases enabled
? I VPS / ( Σ? V CS ), V CRSP = V CC ,
Transconductance
G m(VPS)
V VPS = V CSN _ = 1.2V,
190
210
μS
(CRS Sense Disabled)
V CSP _ - V CSN _ = -60mV to +60mV
Current-sense gain (A CS = 10 typ) divided
Transient-Droop Transresistance
R TRANS
by the voltage preamplifier
4.50
5.25
k ?
transconductance (G m(TRC) = 2mS typ)
CURRENT LIMIT AND BALANCE
Current-Sense Input Preamplifier
Offsets
ILIM(AVE) Input Range
(Adjustable Mode)
V ILIM(AVE)
CSP_ - CSN_
-2.5
V REF
- 1.0
+2.5
V REF
- 0.2
mV
V
ILIM(AVE) Average Current-Limit
Threshold Voltage
V AVELIMIT
CRSP - CRSN; ILIM(AVE) = V CC
20
30
mV
(Positive, Default)
ILIM(AVE) Average Current-Limit
V ILIM(AVE) = V REF - 0.2V
5
15
Threshold Voltage
V AVELIMIT
CRSP - CRSN
mV
(Positive, Adjustable)
V ILIM(AVE) = V REF - 1.0V
44
56
ILIM(AVE) Average Current-Limit
Threshold Voltage (Negative)
ILIM(AVE) Current-Limit Default
Switchover Threshold
CRSP - CRSN; ILIM(AVE) = V CC
-31
3
-19
V CC
- 0.4
mV
V
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