MAX17085B Datasheet, PDF (3/37 Pages) Maxim Integrated Products – Integrated Charger, Dual Main Step-Down Controllers, and Dual LDO Regulators

Integrated Charger, Dual Main Step-Down
Controllers, and Dual LDO Regulators
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
DCIN Undervoltage-Lockout
Trip Point for Charger
DCIN POR Threshold
VCC Undervoltage Lockout
Threshold
VCC POR Threshold
LINEAR REGULATORS
SYMBOL
CONDITIONS
VDCIN(UVLO)
VDCIN falling
VDCIN rising
VDCIN(POR) Falling edge of DCIN
Falling edge of VCC, PWM disabled below
VCC(UVLO) this threshold
Rising edge of VCC
Falling edge of VCC
MIN TYP
7.0 7.2
7.7
2.0
3.8 4.0
4.2
1.5
MAX
7.9
4.3
UNITS
V
V
V
V
LDO_ Output-Voltage Accuracy
Internal LDO Voltage After
Switchover
LDO3 Short-Circuit Current
LDO5 Short-Circuit Current
VLDO5
VLDO3
VLDO5
VLDO3
DCIN = 6V to 24V, ON5 = ON3 = GND
0mA < ILDO5 < 100mA, ON5 = GND
LDO5 = 5V, ILDO5 = 0
0mA < ILDO3 < 50mA, ON3 = GND
Not production tested
Not production tested
LDO3 = GND
LDO5 = GND
4.90 5.00 5.10
V
3.23 3.30 3.37
4.4 4.5
4.6
V
2.7 2.8
2.9
50
130
mA
100
260
mA
LDO5 Bootstrap Switch
Resistance
LDO5 to OUT5, VOUT5 = 5V, ILDO5 = 50mA
1.0
2.5
I
LDO3 Bootstrap Switch
Resistance
Thermal-Shutdown Threshold
REFERENCE
REF Output Voltage
REF Undervoltage-Lockout
Threshold
tSHDN
LDO3 to OUT3, VOUT3 = 3.3V,
ILDO3 = 50mA
Hysteresis = 50NC
VREF
IREF = 50FA
VREF_UVLO REF falling
1.5
3
I
+160
NC
2.09 2.10 2.11
V
2.0
V
MAIN SMPS
OUT5 Output Voltage Accuracy VOUT5 IN = 6V to 28V, SKIP = REF
5.033 5.083 5.135
V
OUT3 Output Voltage Accuracy VOUT3 IN = 6V to 28V, SKIP = REF
3.267 3.300 3.333
V
Either SMPS, SKIP = 2V, ILOAD = 0 to 5A
-0.1
Load Regulation Error
Either SMPS, SKIP = GND, ILOAD = 0 to 5A
-1.7
%
Either SMPS, SKIP = VCC, ILOAD = 0 to 5A
-1.5
Line Regulation Error
Either SMPS, IN = 6V to 28V
0.005
%/V
DH5 On-Time
tON5
RTON = 549kI
IN = 12V,
(300kHz + 10%)
VOUT5 = 5.0V (Note 3) _{RTON = 202kI}
(800kHz + 10%)
1073 1263 1452
ns
402 473 545
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