User Manual

MAX17075
Boost Regulator with Integrated Charge Pumps,
Switch Control, and High-Current Op Amp
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PARAMETER CONDITIONS MIN TYP MAX UNITS
LX Current Limit V
FB
= 1.1V, duty cycle = 75% 2.5 3.0 3.5 A
LX On-Resistance I
LX =
200mA 0.16 0.25 
LX Leakage Current V
LX =
19V, T
A
= +25°C 10 20 μA
Current-Sense Transresistance 0.1 0.2 0.3 V/A
Soft-Start Period 7-bit current ramp 14 ms
POSITIVE CHARGE-PUMP REGULATOR
V
SUP
Input Supply Range 6 18 V
V
SUP
Overvoltage Threshold V
SUP
= rising, hysteresis = 200mV 19 20 21 V
Operating Frequency
0.5 x
f
OSC
Hz
FBP Regulation Voltage -1.5% 1.250 +1.5% V
FBP Line Regulation Error V
SUP
= 12V to 18V, V
GON
= 30V 0.2 %/V
FBP Input Bias Current V
FBP
= 1.5V, T
A
= +25°C -50 +50 nA
DRVP Current Limit Not in dropout 400 mA
DRVP PCH On-Resistance 4 6 
DRVP NCH On-Resistance 1.5 3 
FBP Fault Trip Level Falling edge 0.96 1 1.04 V
Positive Charge-Pump Soft-Start Period
7-bit voltage ramp with filtering to prevent
high peak currents
3 5 ms
NEGATIVE CHARGE-PUMP REGULATOR
V
SUP
Input Supply Range 6 18 V
Operating Frequency
0.5 x
f
OSC
Hz
FBN Regulation Voltage (V
REF
- V
FBN
) V
REF
- V
FBN
= 1V -1.5% 1 +1.5% V
FBN Input Bias Current V
FBN
= 0, T
A
= +25°C -50 +50 nA
FBN Line Regulation Error V
SUP
= 9V to 18V, V
GOFF
= -7V 0.2 %/V
DRVN PCH On-Resistance 4 6 
DRVN NCH On-Resistance 1.5 3 
DRVN Current Limit Not in dropout 400 mA
FBN Fault Trip level Rising edge 450 mV
Negative Charge-Pump Soft-Start Period
7-bit voltage ramp with filtering to prevent
high peak currents
3 5 ms
POSITIVE GATE DRIVER TIMING AND CONTROL SWITCHES
CTL Input Low Voltage 0.6 V
CTL Input High Voltage 2 V
CTL Input Current V
CTL
= 0 or V
VCC
, T
A
= +25°C -1 +1 μA
CTL-to-COM Rising Propagation Delay C
LOAD
= 100pF 250 ns
SRC Input Voltage Range 36 V
SRC-to-COM Switch On-Resistance V
DEL
= 1.5V, CTL = VCC 5 10 
ELECTRICAL CHARACTERISTICS (continued)
(V
VCC
= +5V, Circuit of Figure 1, V
AVDD
= V
SUP
= +13V, T
A
= 0°C to +85°C, unless otherwise noted. Typical values are at T
A
= +25°C.)