MAX1674 Datasheet, PDF (3/12 Pages) Maxim Integrated Products – High-Efficiency, Low-Supply-Current, Compact, Step-Up DC-DC Converters

High-Efficiency, Low-Supply-Current,
Compact, Step-Up DC-DC Converters
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.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Operating Current into OUT
(Note 3)
V_FB = 1.4V, V_OUT = 3.3V
16
35
µA
Shutdown Current into OUT
Efficiency
LX Switch On-Time
LX Switch Off-Time
FB Input Current
LBI Input Current
CLSEL Input Current
SHDN Input Current
LBO Low Output Voltage
LBO Off Leakage Current
Damping Switch Resistance
SHDN Input Voltage
CLSEL Input Voltage
t_ON
t_OFF
I_FB
I_LBI
I_CLSEL
I _{S HDN}
I _LBO
V_IL
V_IH
V_IL
V_IH
SHDN = GND
V_OUT = 3.3V, I_LOAD = 200mA
V_OUT = 2V, I_LOAD = 1mA
V_FB = 1V, V_OUT = 3.3V
V_FB = 1V, V_OUT = 3.3V
V_FB = 1.4V
V_LBI = 1.4V
MAX1676, CLSEL = OUT
V _SHDN = 0 or V_OUT
V_LBI = 0, I_SINK = 1mA
V _LBO = 5.5V, V_LBI = 5.5V
MAX1676, V_BATT = 2V
0.1
1
µA
90
%
85
3
4
7
µs
0.8
1
1.2
µs
0.03
50
nA
1
50
nA
1.4
3
µA
0.07
50
nA
0.2
0.4
V
0.07
1
µA
88
150
Ω
0.8V_OUT
0.2V_OUT
V
0.8V_OUT
0.2V_OUT
V
ELECTRICAL CHARACTERISTICS
(V_BATT = 2V, FB = OUT, R_L = ∞, T_A = -40°C to +85°C, unless otherwise noted.) (Note 4)
PARAMETER
SYMBOL
CONDITIONS
Output Voltage
V_OUT
FB = OUT
FB = GND
Output Voltage Range
Reference Voltage
FB, LBI Thresholds
V_REF I_REF = 0
Internal NFET, PFET
On-Resistance
R_DS(ON)
Operating Current into OUT
(Note 3)
Shutdown Current into OUT
LX Switch On-Time
LX Switch Off-Time
LX Switch Current
Limit (NFET)
V_FB = 1.4V, V_OUT = 3.3V
SHDN = GND
t_ON
V_FB = 1V, V_OUT = 3.3V
t_OFF V_FB = 1V, V_OUT = 3.3V
MAX1674, MAX1676 (CLSEL = OUT)
I_LIM
MAX1675, MAX1676 (CLSEL = GND)
MIN
3.13
4.75
2.20
1.2675
1.2675
2.7
0.75
0.75
0.36
MAX
3.47
5.25
5.5
1.3325
1.3325
UNITS
V
V
V
V
0.6
Ω
40
µA
1
µA
7.0
µs
1.25
µs
1.25
A
0.69
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