MAX16831_09 Datasheet, PDF (2/19 Pages) Maxim Integrated Products – High-Voltage, High-Power LED Driver with Analog and PWM Dimming Control

High-Voltage, High-Power LED Driver with
Analog and PWM Dimming Control
ABSOLUTE MAXIMUM RATINGS
V_CC, HI, LO, CLMP to QGND .................................-0.3V to +80V
CS+, CS-, DGT, UVEN to QGND............................-0.3V to +80V
UVEN to QGND ..........................................-0.3V to (V_CC + 0.3V)
DRV to SGND .........................................................-0.3V to +18V
DRI, REG2, DIM to AGND ......................................-0.3V to +18V
QGND, SGND to AGND ........................................-0.3V to +0.3V
SNS+ to SNS- ...........................................................-0.3V to +6V
CS, FB, COMP, SNS+, SNS-, OV, REF,
RTSYNC to AGND .................................................-0.3V to +6V
REG1, CLKOUT to AGND ........................................-0.3V to +6V
CS+ to CS- .............................................................-0.3V to +12V
HI to LO ..................................................................-0.3V to +36V
CS+, CS-, DGT, CLMP to LO .................................-0.3V to +12V
CS+, CS-, DGT, CLMP to LO ........................-0.3V to (HI + 0.3V)
HI to CLMP .............................................................-0.3V to +28V
Continuous Power Dissipation* (T_A = +70°C)
32-Pin TQFN (derate 34.5mW/°C above +70°C) ........2758mW
Thermal Resistance*
θ_JA .................................................................................29°C/W
θ_JC................................................................................1.7°C/W
Operating Temperature Range .........................-40°C to +125°C
Maximum Junction Temperature .....................................+150°C
Storage Temperature Range .............................-60°C to +150°C
Reflow Temperature.........................................................+240°C
Lead Temperature (soldering, 10s) .................................+300°C
*As per JEDEC 51 standard, multilayer board (PCB).
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 = V_UVEN = 14V, C_REG1 = 1µF, C_REG2 = 1µF, C_CLMP = 0.1µF, R_T = 25kΩ, T_A = T_J = -40°C to +125°C, unless otherwise noted.
Typical specifications are at T_A = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Input Voltage Range
Supply Current
Shutdown Current
V_CC
I_Q
I_SHDN
I_REG2 = 0A
V_UVEN ≤ 0.8V
5.5
76.0
V
2.7
4.5
mA
25
45
µA
UVEN
V_CC UVLO Threshold
V_CC Threshold Hysteresis
UVEN Threshold
V_{CC_R}
V_{CC_F}
V_{CC_HYS}
V_UVR
V_UVF
V_CC rising
V_CC falling
V_UVEN rising
V_UVEN falling
5.5
6.0
V
5.0
5.5
0.4
V
1.100 1.244 1.360
V
1.000 1.145 1.260
UVEN Input Current
I_UVEN V_UVEN = 0V and V_UVEN = 76V, V_CC = 77V
-0.2
+0.2
µA
REGULATORS
REG1 Regulator Output
REG1 Dropout Voltage
REG1 Load Regulation
REG2 Regulator Output
REG2 Dropout Voltage
REG2 Load Regulation
V_REG1
ΔV/ΔI
V_REG2
ΔV/ΔI
0 ≤ I_REG1 ≤ 2mA, 7.5V ≤ V_CC ≤ 76V
I_REG1 = 2mA, V_CC = 5.7V
I_REG1 = 2mA (Note 1)
V_CC = 7.5V, 0 ≤ I_REG1 ≤ 2mA
7.5V ≤ V_CC ≤ 76V, I_REG2 = 1mA
V_CC = 5.7V, 0 ≤ I_REG2 ≤ 20mA
I_REG2 = 20mA (Note 1)
V_CC = 7.5V, 0 ≤ I_REG2 ≤ 20mA
4.75 5.00 5.25
V
4.00 4.50 5.25
0.5
1.0
V
25
Ω
6.65 7.00 7.35
V
4.5
5.0
0.5
V
25
Ω
HIGH-SIDE REGULATOR (CLMP) (All Voltages Referred to LO) (Note 2)
CLMP UVLO Threshold
V_CLMPTH V_CLMP rising
2.0
2.5
3.0
V
CLMP UVLO Threshold
Hysteresis
V_CLMPHYS
0.22
V
2 _______________________________________________________________________________________