5 V/1 2 V/1 5 V o r Ad ju s t a b le , High-Effic ie nc y,
Low I , Ste p-Up DC-DC Controlle rs
Q
0–MAX73
ELECTRICAL CHARACTERISTICS (continued)
(V+ = 5V, I
= 0mA, T = T
to T , unless otherwise noted. Typical values are at T = +25°C.)
MAX A
LOAD
A
MIN
PARAMETERS
REF Load Regulation
REF Line Regulation
SYMBOL
CONDITIONS
MIN
TYP
4
MAX
10
UNITS
mV
MAX77_C/E
MAX77_M
0µA ≤ I
≤ 100µA
REF
4
15
µV/V
3V ≤ V+ ≤ 16.5V
MAX77_C
40
100
1.4700
1.4625
1.4550
1.50
1.50
1.50
1.5300
1.5375
1.5450
±20
FB Trip-Point Voltage
FB Input Current
V
FB
MAX77_E
V
MAX77_M
MAX77_C
I
FB
MAX77_E
±40
nA
MAX77_M
±60
SHDN Input High Voltage
SHDN Input Low Voltage
V
V+ = 2.0V to 16.5V
1.6
V
V
IH
MAX77_C/E, V+ = 2.0V to 16.5V
MAX77_M, V+ = 2.0V to 16.5V
V+ = 16.5V, SHDN = 0V or V+
0.4
0.2
±1
V
IL
µA
nA
mV
µs
SHDN Input Current
LBI Input Current
LBI Hysteresis
LBI Delay
MAX773, V+ = 16.5V, LBI = 1.5V
MAX773
±20
20
2.5
5mV overdrive
MAX77_C
1.4700
1.4625
1.4550
1.50
1.50
1.50
0.01
0.1
1.5300
1.5375
1.5450
1.00
LBI Threshold Voltage
MAX773, LBI falling
MAX77_E
MAX77_M
= 16.5V
V
µA
V
LBO Leakage Current
LBO Output Voltage Low
Current-Limit Trip Level
CS Input Current
MAX773, V+ = 16.5V, V
LBO
V
MAX773, V+ = 5V, LBO sinking 1mA
V+ = 5V to 16.5V
0.4
OL
V
CS
170
200
0.01
55
230
mV
µA
ns
±1
EXT Rise Time
V+ = 5V, 1nF from EXT to ground (Note 3)
V+ = 5V, 1nF from EXT to ground (Note 3)
EXT Fall Time
55
ns
MAX773, I
SGND = 0V, C
= 1mA to 20mA,
Supply Voltage in
Shunt Mode
SHUNT
V
5.5
6.3
V
SHUNT
= 0.1µF
SHUNT
Note 1: Output voltage guaranteed using preset voltages. See Figures 7a–7d for output current capability versus input voltage.
Note 2: Output voltage line and load regulation depend on external circuit components.
Note 3: For the MAX773, EXT is EXTH and EXTL shorted together.
_______________________________________________________________________________________
3
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
