MAX14514 Datasheet, PDF (4/14 Pages) Maxim Integrated Products – Dual Electroluminescent Lamp Driver

Dual Electroluminescent Lamp Driver
ELECTRICAL CHARACTERISTICS (continued)
(V_DD = +2.7V to +5.5V, C_{LAMP_TOTAL} = 10nF, C_CS = 3.3nF, L_X = 220µH (I_SAT = 170mA, R_S = 5.5Ω), T_A = -40°C to +85°C, unless
otherwise noted. Typical values are at V_DD = +3.0V, T_A = +25°C.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
BOOST CONVERTER
Output Regulation Voltage
V_CS
V_DD = +3V
V_{DIM_} = +0.5V
V_{DIM_} = +1V
Boost Switching Frequency
V_{DIM_} = +1.3V
f_SW
C_SW = 96pF, R_SLEW = 375kΩ
Switch On-Resistance
R_LX
I_SINK = 25mA, V_DD = +3V
LX Leakage Current
I_LX
V_LX = +150V
CS Input Current
CONTROL INPUT (SW)
I_CS
No load, V_CS = +150V, V_EN = 0, V_{DIM_} = 0
Input-Voltage High Threshold
Input-Voltage Low Threshold
V_{IH_CSW} R_SLEW = 375kΩ
V_{IL_CSW} R_SLEW = 375kΩ
Input Low Current
I_{IL_CSW}
R_SLEW = 375kΩ, V_CS = +78V, C_EL = V_DD,
V_{DIM_} = V_DD
Input High Current
I_{IH_CSW}
R_SLEW = 375kΩ, V_CS = +78V, C_EL = V_DD,
V_{DIM_} = V_DD
CONTROL INPUT (EL)
Input-Voltage High Threshold
Input-Voltage Low Threshold
V_{IH_CEL}
V_{IL_CEL}
R_SLEW = 375kΩ
R_SLEW = 375kΩ
Input Low Current
Input High Current
I_{IL_CEL}
I_{IH_CEL}
R_SLEW = 375kΩ
R_SLEW = 375kΩ
CONTROL INPUT (CAP)
CAP Switching Frequency
Slow Turn-On Time
Fast Turn-On CAP Threshold
f_CAP
t_{SLOW_ON}
V_{FAST_CAP}
R_SLEW = 375kΩ, C_CAP = 1.25nF
R_SLEW = 375kΩ, C_CAP = 1.25nF
R_SLEW = 375kΩ
Nonfast Turn-On CAP Threshold
V_{NON- RSLEW = 375kΩ}
FAST_CAP
Input Leakage Current
I_{IH_CAP}
CAP = V_DD, R_SLEW = ^{Normal operation}
375kΩ
Shutdown mode
CONTROL INPUT (SLEW)
Force Voltage
High-Voltage Output Slew Rate
V_FORCE
R_SLEW = 375kΩ
R_SLEW = 375kΩ
CONTROL INPUTS (DIM1, DIM2)
Input High Voltage
V_{IH_DIM__} Max output voltage
Input Low Voltage
Input Low Current
V_{IL_DIM__} Min output voltage
I_{IL_DIM__} V_{DIM_} = 0, R_SLEW = 375kΩ
Input High Current
I_{IH_DIM__} V_{DIM_} = V_DD
PWM Frequency Range
Low-Peak Detector Threshold
Low-Peak Detector Hysteresis
V_LPD
V_{LPD_HYST}
MIN TYP MAX UNITS
52
65
81
105
130
155
V
125
150
175
80
100
120
kHz
20
Ω
-1
+1
µA
50
µA
0.9
0.98 1.06
V
0.43 0.49 0.55
V
43
79
µA
5
7.5
µA
1.08
1.32
V
0.22
0.39
V
1.3
1.88
µA
1.3
1.88
µA
180
300
410
Hz
0.3
s
V_DD - 0.35
V
1.4
V
0.3
-100
1
µA
100
nA
0.9
0.98 1.05
V
32
V/100µs
1.3
0.15
2.2
2.6
3.0
-1
+1
0.2 to 1
0.13
0.35
100
V
V
µA
µA
MHz
V
mV
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