Rainbow Electronics MAX17075 - Manual (Page 3)

MAX17075
Boost Regulator with Integrated Charge Pumps,
Switch Control, and High-Current Op Amp
_______________________________________________________________________________________ 3
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.)