Rainbow Electronics MAX16831 - Manual (Page 2)

MAX16831
High-Voltage, High-Power LED Driver with
Analog and PWM Dimming Control
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
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.)
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.
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).
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Input Voltage Range V CC 5.5 76.0 V
Supply Current I Q I REG2 = 0A 2.7 4.5 mA
Shutdown Current I SHDN V UVEN
≤ 0.8V 25 45 µA
UVEN
V CC_R V CC rising 5.5 6.0
V CC UVLO Threshold
V
CC_F
V
CC
falling 5.0 5.5
V
V CC Threshold Hysteresis V CC_HYS 0.4 V
V UVR V UVEN rising 1.100 1.244 1.360
UVEN Threshold
V UVF V UVEN falling 1.000 1.145 1.260
V
UVEN Input Current I UVEN V UVEN = 0V and V UVEN = 76V, V CC = 77V -0.2 +0.2 µA
REGULATORS
0 ≤ I
REG1
≤ 2mA, 7.5V ≤ V
CC
≤ 76V 4.75 5.00 5.25
REG1 Regulator Output V REG1
I REG1 = 2mA, V CC = 5.7V 4.00 4.50 5.25
V
REG1 Dropout Voltage I REG1 = 2mA (Note 1) 0.5 1.0 V
REG1 Load Regulation ∆V/∆I V CC = 7.5V, 0 ≤ I
REG1
≤ 2mA 25 Ω
7.5V ≤ V
CC
≤ 76V, I
REG2 = 1mA 6.65 7.00 7.35
REG2 Regulator Output V
REG2
V CC = 5.7V, 0 ≤ I
REG2
≤ 20mA 4.5 5.0
V
REG2 Dropout Voltage I REG2 = 20mA (Note 1) 0.5 V
REG2 Load Regulation ∆V/∆I V CC = 7.5V, 0 ≤ I
REG2
≤ 20mA 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