MAX16831_09 Datasheet, PDF (3/19 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
ELECTRICAL CHARACTERISTICS (continued)
(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
CLMP Regulator Output Voltage
V_CLMP
8.7V ≤ (V_HI - V_LO) ≤ 36V, I_CLMP = 1mA
5.0V ≤ (V_HI - V_LO) ≤ 8.7V, I_CLMP = 250µA
5.5
8.0
10.0
(V_HI - V_LO)
V
- 0.7
CURRENT-SENSE AMPLIFIER (CSA)
Differential Input Voltage Range
V_CS+ -
V_CS-
0
0.3
V
Common-Mode Range
CS+ Input Bias Current
CS- Input Bias Current
Unity-Gain Bandwidth
I_CS+
I_CS-
V_CS+ - V_CS- = 0.3V
V_CS+ - V_CS- = 0.3V
From (CS+ - CS-) to CS
0
-250
V_CC
V
+250
µA
400
µA
1.0
MHz
REF OUTPUT BUFFER
REF Output Voltage
DIM DRIVER
V_REF -100µA ≤ I_REF ≤ +100µA
2.85 3.00 3.15
V
Source Current
Sink Current
GATE DRIVER
V_CLMP - V_LO = 4V
V_CLMP - V_LO = 8V
V_CLMP - V_LO = 4V
V_CLMP - V_LO = 8V
5
20
mA
30
67
10
22
mA
40
76
DRI UVLO Threshold
V_{UVLO_TH} DRI rising
DRI UVLO Threshold Hysteresis V_{UVLO_HYST}
Driver Output Impedance
Z_{OUT_L}
Z_{OUT_H}
V_DRI = 7.0V, DRV sinking 250mA
V_DRI = 7.0V, DRV sourcing 250mA
Peak Sink Current
I_SK
V_DRI = 7.0V
Peak Source Current
I_SR
V_DRI = 7.0V
PWM, ILIM, AND HICCUP COMPARATOR
4.0
4.2
4.4
V
0.3
V
2.8
4
Ω
5.0
8
2.5
A
1.4
A
PWM Comparator Offset Voltage
V_COMP - (V_SNS+ - V_SNS-)
0.7
V
Peak Current-Limit Comparator
Trip Threshold
160
200
240
mV
Peak Current-Limit Comparator
Propagation Delay (Excluding
Blanking Time)
50mV overdrive
40
ns
HICCUP Comparator Trip
Threshold
SNS+ Input Bias Current
SNS- Input Bias Current
Blanking Time
t_BLNK
V_SNS+ = 0V, V_SNS- = 0V
V_SNS+ = 0V, V_SNS- = 0V
235
300
385
mV
-100 -65
µA
-100 -65
µA
40
ns
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