Electrical characteristics – Rainbow Electronics MAX17075 User Manual
Page 5
MAX17075
Boost Regulator with Integrated Charge Pumps,
Switch Control, and High-Current Op Amp
_______________________________________________________________________________________
5
ELECTRICAL CHARACTERISTICS
(V
CC
= +5V, Circuit of Figure 1, V
AVDD
= V
SUP
= +13V, T
A
= -40°C to +85°C, unless otherwise noted.) (Note 1)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V
CC
Input Supply Range
2.5
5.5
V
V
CC
Undervoltage-Lockout Threshold
V
CC
rising, hysteresis (typ) = 50mV
2.05
2.45
V
V
CC
Shutdown Current
200
μA
V
FB
= 1.3V, not switching
1.5
V
CC
Quiescent Current
V
FB
= 1.0V, switching
5
mA
REFERENCE
REF Output Voltage
No external load
1.230
1.267
V
REF Load Regulation
0 < I
LOAD
< 50μA
6
mV
REF Sink Current
In regulation
10
μA
REF Undervoltage-Lockout Threshold
Rising edge, hysteresis (typ) = 200mV
1.15
V
OSCILLATOR AND TIMING
Frequency
1000
1400
kHz
Oscillator Maximum Duty Cycle
86
94
%
Duration to Trigger Fault Condition
FB or FBP or FBN below threshold
47
65
ms
DEL Capacitor Charge Current
During startup, V
DEL
=
1.0V
4 6 μA
DEL Turn-On Threshold
1.19
1.31
V
STEP-UP REGULATOR
Output Voltage Range
V
IN
18 V
FB Regulation Voltage
FB = COMP, C
COMP
= 1nF
1.230
1.267
V
FB Fault Trip Level
Falling edge
0.96
1.04
V
FB Line Regulation
V
CC
= 2.5V to 5.5V
-0.25
+0.25
%/V
FB Input Bias Current
V
FB
= 1.25V
50
200
nA
FB Transconductance
I = ±2.5μA at COMP, FB = COMP
75
280
μS
LX Current Limit
V
FB
= 1.1V, duty cycle = 75%
2.5
3.5
A
LX On-Resistance
I
LX =
200mA
0.25
Current-Sense Transresistance
0.10
0.30
V/A
POSITIVE CHARGE-PUMP REGULATOR
V
SUP
Input Supply Range
6
18
V
V
SUP
Overvoltage Threshold
V
SUP
= rising, hysteresis = 200mV
19
21
V
FBP Regulation Voltage
-2%
1.25
+2%
V
FBP Line Regulation Error
V
SUP
= 8V to 18V, V
GON
= 30V
0.2
%/V
FBP Input Bias Current
V
FBP
= 1.5V, T
A
= +25
°C -50
+50
nA
DRVP PCH On-Resistance
6
DRVP NCH On-Resistance
3
FBP Fault Trip Level
Falling edge
0.96
1.04
V
Positive Charge-Pump Soft-Start Period
7-bit voltage ramp with filtering to prevent
high peak currents
5
ms