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MAX17085BETL+ Datasheet(PDF) 4 Page - Maxim Integrated Products

Part # MAX17085BETL+
Description  Integrated Charger, Dual Main Step-Down Controllers, and Dual LDO Regulators
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX17085BETL+ Datasheet(HTML) 4 Page - Maxim Integrated Products

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Integrated Charger, Dual Main Step-Down
Controllers, and Dual LDO Regulators
4 ______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1, no load on LDO5, LDO3, OUT5, OUT3, and REF, VCC = 5V, ON3 = ON5 = VCC, VDCIN = VLXC = VCSSP = VCSSN
= 19V, VBSTC - VLXC = 5V, VBATT = VCSIP = VCSIN = 12.6V, VVCTL = VISET = 1.8V, CELLS = open, TA = 0°C to +85°C, unless oth-
erwise noted. Typical values are at TA = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
DH3 On-Time
tON3
IN = 12V,
VOUT3 = 3.3V (Note 3)
RTON = 549kI
(300kHz - 10%)
866
1019
1171
ns
RTON = 202kI
(800kHz - 10%)
325
382
439
Minimum Off-Time
tOFF(MIN)
(Note 3)
210
270
330
ns
Extended On-Time Blanking
Duty cycle > 50%; not for production test
300
360
ns
Soft-Start Time
tSS
Rising edge on ON_
2
ms
Ultrasonic Operating Frequency
fSW(USONIC) SKIP = GND
15
22
kHz
MAIN SMPS FAULT DETECTION
OUT_ Overvoltage Trip
Threshold (PGOOD Pulled Low
Above This Level)
With respect to error comparator threshold
13
16
19
%
OUT_Overvoltage Fault
Propagation Delay
tOVP
FB_ forced 50mV above trip threshold
10
F
s
OUT_ Undervoltage Protection
Trip Threshold
With respect to error comparator threshold
65
70
75
%
OUT_ Output Undervoltage
Fault Propagation Delay
tUVP
10
F
s
PGOOD Lower Trip Threshold
With respect to error comparator threshold,
falling edge, hysteresis = 15mV
-350
-250
-150
mV
PGOOD Propagation Delay
tPGOOD
OUT5 or OUT3 forced 50mV beyond
PGOOD trip threshold, falling edge
10
F
s
PGOOD Output Low Voltage
PGOOD low impedance, ON5 = ON3 =
GND, ISINK = 4mA
0.3
V
PGOOD Leakage Current
IPGOOD
PGOOD high impedance, SMPS in
regulation, PGOOD forced to 5.5V,
TA = +25
°C
1
F
A
Fault Reset Timer
7
10
ms
MAIN SMPS CURRENT LIMIT
ILIM_ Adjustment Range
0.2
2.1
V
ILIM_ Leakage Current
TA = +25
°C
-0.1
+0.1
F
A
Valley Current-Limit Threshold
(Adjustable)
VLIM_ (VAL) VAGND - VLX_
VILIM_ = 0.5V
40
50
60
mV
VILIM_ = 1.00V
87
100
113
VILIM_ = 2.10V
184
210
236
Ultrasonic Negative
Current-Limit Threshold
INEG(US)
72
mV
Current-Limit Threshold
(Zero Crossing)
VZX
VAGND - VLX_, SKIP = VCC or GND,
VILIM = 1V
1.5
mV


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