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MAX17702 Datasheet(PDF) 4 Page - Maxim Integrated Products

Part # MAX17702
Description  4.5V to 60V, Synchronous Step-Down LeadAcid Battery Charger Controller
PDF  35 Pages
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX17702 Datasheet(HTML) 4 Page - Maxim Integrated Products

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Electrical Characteristics (continued)
(VIN = VDCIN = 24V, CVIN = 4.7μF, CDCIN = 100nF, CVCC = 4.7μF, CVREF = 100nF, CBST = 470nF, VBST to VLX = 5V, VEN/UVLO =
VLX = VILIM = VCSN = VCSP = VDDTH = VTMR = 2.5V, VTEMP = VFB = 1.1V, VEXTVCC = VSGND/EP = VPGND = 0V, RT/SYNC = DH =
DL = GATEN = COMP = FLG1 = FLG2 = ISMON = Unconnected, TA= -40°C to +125°C, unless otherwise noted. Typical values are at
TA= +25°C. All voltages are referenced to SGND/EP, unless otherwise noted.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
SYNC Input-Leakage
Current
ISYNC_LKG
VRT/SYNC = 2.5V, TA = +25ºC
-100
+100
nA
GATE DRIVER
DH to BST On-
Resistance
Source 100mA
0.8
1.2
2.1
Ω
DH to LX On-Resistance
Sink 100mA
0.3
0.6
1.0
Ω
DL to VCC On-
Resistance
Source 100mA
0.8
1.2
2.1
Ω
DL to PGND On-
Resistance
Sink 100mA
0.3
0.6
1.0
Ω
DH Minimum Controlled
On-Time
tMIN_ON_DH
60
80
100
ns
DL Minimum
Guaranteed On-Time
tMIN_ON_DL
60
80
100
ns
Dead Time
tDT_HL
DH falling to DL rising, CDH-LX = 6nF,
CDL-PGND = 6nF
30
ns
tDT_LH
DL falling to DH rising, CDH-LX = 6nF,
CDL-PGND = 6nF
30
DH Transition Time
tHR
DH rising, CDH-LX = 6nF
25
ns
tHF
DH falling, CDH-LX = 6nF
11
DL Transition Time
tLR
DL rising, CDL-PGND = 6nF
25
ns
tLF
DL falling, CDL-PGND = 6nF
11
REFERENCE VOLTAGE (VREF)
VREF Output Voltage
VREF
IVREF = 0 to 1mA
2.465
2.500
2.535
V
Reference Current Limit
IREF_LIM
VREF = 2.45V
1.2
1.8
2.7
mA
CURRENT SENSE (CSP, CSN, ILIM)
CSP and CSN
Common-Mode Voltage
Range
0
(VIN - 2)
V
CSP-to-CSN Input
Operating Voltage
VDIFF_CS
VDIFF_CS = (VCSP - VCSN)
-10
100
mV
CSP-to-CSN Regulation
Voltage Accuracy
VCSREG
VILIM = 1.5V
48
50
52
mV
VILIM = 0.9V
28
30
32
VILIM = VREF
48
50
52
CSP Pin Current
CSP source
200
1400
nA
CSN Pin Current
VEN/UVLO = 0V, CSN sink
1.3
2.3
μA
Charger on, VILIM
= 0.9V to 1.5V
ICHG > ITCHG,
CSN source
250
400
550
ICHG < ITCHG,
CSN sink
470
700
1000
MAX17702
4.5V to 60V, Synchronous Step-Down Lead-Acid
Battery Charger Controller
www.maximintegrated.com
Maxim Integrated | 4



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