MAX1605 Datasheet, PDF (2/12 Pages) Maxim Integrated Products – 30V Internal Switch LCD Bias Supply

30V Internal Switch LCD Bias Supply
ABSOLUTE MAXIMUM RATINGS
V_CC, FB, LIM, SHDN to GND....................................-0.3V to +6V
LX to GND ..............................................................-0.3V to +32V
Continuous Power Dissipation (T_A = +70°C)
6-Pin SOT23 (derate 8.7mW/°C above +70°C) ...........696mW
6-Pin TDFN (derate 24.4mW/°C above +70°C) .........1951mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(V_CC = SHDN = 3.3V, T_A = 0°C to +85°C, unless otherwise noted. Typical values are at T_A = +25°C.) (Note 1)
PARAMETER
Supply Voltage
Inductor Input Voltage Range
V_CC Undervoltage Lockout
Quiescent Supply Current
Shutdown Supply Current
V_CC Line Regulation
V_IN Line Regulation
Load Regulation
Efficiency
Feedback Set Point
Feedback Input Bias Current
LX
LX Voltage Range
LX Switch Current Limit
LX On-Resistance
LX Leakage Current
Maximum LX On-Time
Minimum LX Off-Time
SYMBOL
V_CC
V_IN
V_UVLO
I_CC
∆V_LNR
∆V_LNR
∆V_LDR
V_FB
I_FB
(Note 2)
CONDITIONS
(Note 2)
V_CC falling, 50mV typical hysteresis
V_FB = 1.3V
SHDN = GND
V_OUT = 18V, I_LOAD = 1mA, V_IN = 5V,
V_CC = V_LIM = 2.4V to 5.5V
V_OUT = 18V, I_LOAD = 1mA,
V_CC = V_LIM = 5V, V_IN = 2.4V to 12V
V_OUT = 18V, V_CC = V_IN = V_LIM = 5V,
I_LOAD = 0mA to 20mA
L1 = 100µH, V_IN = 3.6V, I_LOAD = 10mA
V_FB = 1.3V
V_LX
I_LX(MAX)
R_LX
t_ON
t_OFF
LIM = V_CC
LIM = floating
LIM = GND
V_CC = 5V, I_LX = 100mA
V_CC = 3.3V, I_LX = 100mA
V_LX = 30.5V
V_FB > 1.1V
V_FB < 0.8V (soft-start)
MIN TYP
2.4
0.8
2.0
2.2
18
0.1
0.1
0.15
0.1
88
1.225 1.25
5
0.40 0.50
0.20 0.25
0.10 0.125
0.8
1
10
13
0.8
1.0
3.9
5.0
MAX
5.5
V_OUT
2.37
35
1
1.275
100
30.5
0.56
0.285
0.15
2
2
16
1.2
6.0
UNITS
V
V
V
µA
µA
%/V
%/V
%/mA
%
V
nA
V
A
Ω
µA
µs
µs
2 _______________________________________________________________________________________