Electrical characteristics – Rainbow Electronics MAX1730 User Manual
Page 3
MAX1730
50mA Regulated Step-Down Charge Pump
for 1.8V or 1.9V Logic
_______________________________________________________________________________________
3
ELECTRICAL CHARACTERISTICS
(V
IN
= +3.6V, FB = GND, SHDN = IN, T
A
= -40°C to +85°C, unless otherwise noted.) (Note 1)
Note 1: Specifications to -40°C are guaranteed by design, not production tested.
SHDN = IN or GND
V
IN
= 2.7V to 5.5V
V
IN
= 2.7V to 5.5V
Falling edge (100mV hysteresis)
FB = GND
V
OUT
= GND
V
IN
= 4.2V, SHDN = GND
SHDN = IN
OUT forced to 1.8V, V
IN
= 1.8V to 5.5V,
SHDN = GND
V
IN
= 2.7V to 5.5V,
I
OUT
= 0 to 50mA
CONDITIONS
FB = GND
FB = IN
µA
-1
1
I
SHDN
Shutdown Logic Input Current
V
0.6
V
IL
SHDN Logic Input Low Voltage
V
1.4
V
IH
SHDN Logic Input High Voltage
V
3.1
3.35
V
IN
Transition Voltage
(V
IN
Rising)
MHz
1.5
2.5
f
Oscillator Frequency
V
1.746
1.854
V
OUT
Output Voltage
V
2.3
2.6
V
2.7
5.5
V
IN
Input Voltage Range
Input Undervoltage Lockout
mA
125
Output Short-Circuit Current
µA
5
Shutdown Supply Current
µA
150
No-Load Supply Current
µA
5
Output Leakage Current
1.843
1.957
From 1:1 to 2:3
UNITS
MIN
MAX
SYMBOL
PARAMETER
From 2:3 to 1:2
4.00
4.30