Electrical characteristics (continued), Electrical characteristics – Rainbow Electronics MAX17062 User Manual
Page 3
MAX17062
TFT-LCD Step-Up DC-DC Converter
_______________________________________________________________________________________
3
ELECTRICAL CHARACTERISTICS (continued)
(V
IN
= V
SHDN
= 3V, FREQ = 3V, T
A
= 0°C to +85°C. Typical values are at T
A
= +25°C, unless otherwise noted.) (Note 1)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
CONTROL INPUTS
SHDN, FREQ Input Low Voltage
V
IN
= 2.6V to 5.5V
0.3
V
IN
V
SHDN, FREQ Input High Voltage V
IN
= 2.6V to 5.5V
0.7
V
IN
V
SHDN, FREQ Input Hysteresis
V
IN
= 2.6V to 5.5V
0.1
V
IN
V
FREQ
Pulldown
Current
3 6 9 μA
SHDN = AGND, T
A
= +25°C
-1
+1
SHDN Input Current
SHDN = AGND, T
A
= +85°C
0
μA
ELECTRICAL CHARACTERISTICS
(V
IN
= V
SHDN
= 3V, FREQ = 3V, T
A
= -40°C to +85°C, unless otherwise noted.) (Note 1)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V
OUT
< 18V
2.6
5.5
Input Voltage Range
18V < V
OUT
< 20V
4.0
5.5
V
Output Voltage Range
20
V
IN Undervoltage-Lockout
Threshold
V
IN
rising, typical hysteresis is 50mV
2.30
2.57
V
V
FB
= 1.3V, not switching
0.6
IN Quiescent Current
V
FB
= 1.0V, switching
2.5
mA
ERROR AMPLIFIER
FB Regulation Voltage
Level to produce V
COMP
= 1.24V
1.227
1.253
V
FB Input Bias Current
V
FB
= 1.24V
225
nA
FB Line Regulation
Level to produce V
COMP
= 1.24V, V
IN
= 2.6V to 5.5V
0.15
%/V
Transconductance
110
450
μS
Shutdown FB Input Voltage
SHDN = AGND
0.05
0.15
V
OSCILLATOR
FREQ = AGND
450
830
Frequency
FREQ = IN
950
1500
kHz
Maximum Duty Cycle
87
95
%
n-CHANNEL MOSFET
Current Limit
V
FB
= 1V, 75% duty cycle, IN = 5V
3.9
5.3
A
IN = 5V
170
On-Resistance
IN = 3V
210
m
Current-Sense Transresistance
IN = 5V
0.09
0.25
V/A
SOFT-START
Reset Switch Resistance
100
Charge Current
V
SS
= 1.2V
2
6
μA