Electrical characteristics, Electrical characteristics (continued) – Rainbow Electronics MAX1676 User Manual
Page 3
MAX1674/MAX1675/MAX1676
High-Efficiency, Low-Supply-Current,
Compact, Step-Up DC-DC Converters
_______________________________________________________________________________________
3
ELECTRICAL CHARACTERISTICS
(V
BATT
= 2V, FB = OUT, R
L
=
∞, T
A
= -40°C to +85°C, unless otherwise noted.) (Note 4)
V
OUT
= 2V, I
LOAD
= 1mA
V
OUT
= 3.3V, I
LOAD
= 200mA
SHDN = GND
CONDITIONS
%
85
Efficiency
90
µA
0.1
1
Shutdown Current into OUT
UNITS
MIN
TYP
MAX
SYMBOL
PARAMETER
MAX1676, V
BATT
= 2V
V
LBO
= 5.5V, V
LBI
= 5.5V
V
LBI
= 0, I
SINK
= 1mA
V
SHDN
= 0 or V
OUT
V
FB
= 1V, V
OUT
= 3.3V
MAX1676, CLSEL = OUT
V
LBI
= 1.4V
V
FB
= 1.4V
V
FB
= 1V, V
OUT
= 3.3V
0.8V
OUT
V
IH
0.2V
OUT
V
IL
CLSEL Input Voltage
V
0.8V
OUT
V
IH
0.2V
OUT
V
IL
SHDN Input Voltage
Ω
88
150
Damping Switch Resistance
µA
0.07
1
I
LBO
LBO Off Leakage Current
V
0.2
0.4
LBO Low Output Voltage
nA
0.07
50
I
SHDN
SHDN Input Current
µA
1.4
3
I
CLSEL
CLSEL Input Current
nA
1
50
I
LBI
LBI Input Current
nA
0.03
50
I
FB
FB Input Current
µs
0.8
1
1.2
t
OFF
LX Switch Off-Time
µs
3
4
7
t
ON
LX Switch On-Time
V
ELECTRICAL CHARACTERISTICS (continued)
(V
BATT
= 2V, FB = OUT (V
OUT
= 3.3V), R
L
= ˙
∞, T
A
= 0°C to +85°C, unless otherwise noted. Typical values are at T
A
= +25°C.)
FB = GND
FB = OUT
V
FB
= 1V, V
OUT
= 3.3V
V
FB
= 1V, V
OUT
= 3.3V
SHDN = GND
V
FB
= 1.4V, V
OUT
= 3.3V
I
REF
= 0
MAX1675, MAX1676 (CLSEL = GND)
MAX1674, MAX1676 (CLSEL = OUT)
CONDITIONS
0.36
0.69
A
0.75
1.25
I
LIM
LX Switch Current
Limit (NFET)
V
2.20
5.5
Output Voltage Range
V
4.75
5.25
3.13
3.47
V
OUT
Output Voltage
µs
0.75
1.25
t
OFF
LX Switch Off-Time
µs
2.7
7.0
t
ON
LX Switch On-Time
µA
1
Shutdown Current into OUT
µA
40
Operating Current into OUT
(Note 3)
V
1.2675
1.3325
V
REF
Reference Voltage
V
1.2675
1.3325
FB, LBI Thresholds
Ω
0.6
R
DS(ON)
Internal NFET, PFET
On-Resistance
UNITS
MIN
MAX
SYMBOL
PARAMETER
V
FB
= 1.4V, V
OUT
= 3.3V
µA
16
35
Operating Current into OUT
(Note 3)