Electrical characteristics (continued), Electrical characteristics – Rainbow Electronics MAX8758 User Manual
Page 4
MAX8758
Step-Up Regulator with Switch Control and
Operational Amplifier for TFT LCD
4
_______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(V
IN
= V
SHDN
= +3V, OUT = +10V, FREQ = GND,
T
A
= 0°C to +85°C, unless otherwise noted. Typical values are at T
A
= +25°C.)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
I
OUTB
= 100µA
V
SUPB
-
15
Output Voltage Swing High
I
OUTB
= 5mA
V
SUPB
-
150
mV
I
OUTB
= -100µA
15
Output Voltage Swing Low
I
OUTB
= -5mA
150
mV
Slew Rate
7.5
V/µs
-3dB Bandwidth
12
MHz
Gain-Bandwidth Product
8
MHz
OUTB shorted to V
SUPB
/2, sourcing
75
150
Short-Circuit Current
OUTB shorted to V
SUPB
/2, sinking
75
150
mA
CONTROL INPUTS
FREQ Input Low Voltage
V
IN
= 1.8V to 5.5V
0.6
V
V
IN
= 1.8V to 2.4V
1.4
FREQ Input High Voltage
V
IN
= 2.4V to 5.5V
2.0
V
FREQ Pulldown Current
V
FREQ
= 1.0V
3.5
5.0
6.0
µA
SHDN Input Low Voltage
V
IN
= 1.8V to 5.5V
0.6
V
V
IN
= 1.8V to 2.4V
1.4
V
IN
= 2.4V to 3.6V
2.0
SHDN Input High Voltage
V
IN
= 3.6V to 5.5V
2.9
V
SHDN Input Current
0.001
1.0
µA
ELECTRICAL CHARACTERISTICS
(V
IN
= V
SHDN
= +3V, OUT = +10V, FREQ = GND,
T
A
= -40°C to +85°C, unless otherwise noted.) (Note 2)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
IN Input Voltage Range
1.8
5.5
V
IN Quiescent Current
V
IN
= 3V, V
FB
= 1.5V
30
µA
IN Undervoltage Lockout
IN rising, 200mV hysteresis, LX remains off below
this level
1.75
V
LDO Output Voltage
6V
≤ V
OUT
≤ 13V, I
LDO
= 12.5mA, V
FB
= 1.5V
(Note 1)
4.8
5.2
V
LDO Undervoltage Lockout Voltage
LDO rising, 200mV hysteresis
2.4
3.0
V
OUT Supply Voltage Range
(Note 1)
4.5
13.0
V
V
FB
= 1.5V, no load
2.0
OUT Supply Current
V
FB
= 1.1V, no load
10.0
mA
STEP-UP REGULATOR
FREQ = GND
512
768
Operating Frequency
FREQ = IN
990
1380
kHz