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PM6685 数据表(PDF) 9 Page - STMicroelectronics

部件名 PM6685
功能描述  DUAL STEP-DOWN CONTROLLER WITH AUXILARY VOLTAGES FOR NOTEBOOK SYSTEM POWER
PDF  16 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

PM6685 数据表(HTML) 9 Page - STMicroelectronics

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Table 6.
Electrical characteristics (continued)
Simbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
Soft Start Ramp time
2
6
ms
ICSENSE
Input bias current limit
90
100
110
µA
Comparator offset
VCSENSE - VPGND
-5
5
mV
Zero Crossing Comparatot Offset
VPGND - VPHASE
-5
5
mV
Fixed Negative current limit
Threshold
VPGND - VPHASE
-120
mV
TON
ON-Time duration
FSEL to GND
OUT5=5V
2083
ns
OUT3=3.3V
917
FSEL to VREF
OUT5=5V
1390
OUT3=3.3V
688
FSEL to LDO5
OUT5=5V
1040
OUT3=3.3V
550
TOFFMIN
Minimum OFF-Time
300
350
ns
VREF
Voltage Accuracy
4.2V < VLDO5 < 5.5V
1.224
1.237
1.249
V
Load regulation
-100µA < IREF < 100µA
-4
4
mV
Undervoltage Lockout fault
threshold
Falling edge of REF
0.95
V
COMP
Over voltage clamp
250
mV
COMP
Under voltage clamp
-150
Line regulation
Both SMPS, 6V< VIN <28V
0.004
%/V
VLDO5
LDO5 linear Output Voltage
6V < VIN < 28V,
0 < ILDO5 < 50mA
4.9
5.0
5.1
V
LDO5 line regulation
6V < VIN < 28V, ILDO5 = 50mA
LDO3_SEL tied to GND
0.004
%/V
ILDO5
LDO5 Current limit
VLDO5 > UVLO, ILDO3 = 0A VOUT5
> 5.1V, VOUT3 > 3.34V
300
350
400
mA
UVLO
Under Voltage Lockout of LDO5
3.94
4
4.13
V
VLDO3
LDO3 linear Ouput Voltage
0 < ILDO3 < 50mA
3.23
3.3
3.37
V
ILDO3
LDO3 Current limit
VLDO5 > UVLO
130
200
mA
HGATE driver on-resistance
HGATEx high state(pullup)
2.0
3
Ω
HGATEx low state (pulldown)
1.8
2.7
Ω
LGATE driver on-resistance
LGATEx high state(pullup)
1.4
2.1
Ω
LGATEx low state (pulldown)
0.6
0.9
Ω



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