MAX16834_15 Datasheet, PDF (5/23 Pages) Maxim Integrated Products – High-Power LED Driver with Integrated High-Side LED Current Sense and PWM Dimming MOSFET Driver

MAX16834
High-Power LED Driver with Integrated
High-Side LED Current Sense and
PWM Dimming MOSFET Driver
Typical Operating Characteristics
(V_IN = V_HV = 12V, V_UVEN = 5V, V_LV = V_PWMDIM = V_SGND, C_VCC = 4.7μF, C_LCV = 100nF, C_REF = 100nF, R_SENSE+ = 0.1Ω,
R_RT = 10kΩ, T_A = +25°C, unless otherwise noted.)
VREF vs. TEMPERATURE
3.74
3.72
3.70
3.68
3.66
3.64
3.62
VIN = 12V
3.60
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
3.80
3.75
3.70
3.65
3.60
3.55
3.50
4
VREF vs. SUPPLY VOLTAGE
8 12 16 20 24 28
SUPPLY VOLTAGE (V)
3.7020
3.7015
VREF vs. IREF
VIN = 12V
3.7010
3.7005
3.7000
3.6995
3.6990
3.6985
3.6980
0 1 2 3 4 5 6 7 8 9 10
IREF (mA)
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
20
18
PWMDIM = 0
16
14
12
10
8
6
4
2
0
4 8 12 16 20 24 28
SUPPLY VOLTAGE (V)
SUPPLY CURRENT
vs. TEMPERATURE
10
9
8
7
6
5
4
3
2
1
VIN = 12V
PWMDIM = 0
0
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
RT vs. SWITCHING FREQUENCY
100
10
VIN = 12V
1
100
1000
SWITCHING FREQUENCY (kHz)
SWITCHING FREQUENCY
vs. TEMPERATURE
605
604
603
602
601
600
599
598
597
596
595
594
593
592
591
VIN = 12V
590
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
7.16
7.14
7.12
7.10
7.08
7.06
7.04
7.02
7.00
6.98
6.96
6.94
6.92
6.90
0
VCC vs. ICC
VIN = 12V
10 20 30 40 50 60 70 80 90 100
ICC (mA)
VCC vs. ICC
7.2
TA = +125°C
VIN = 12V
7.1
TA = +100°C
7.0 _{TA = +25°C}
TA = -40°C
6.9
6.8
0 10 20 30 40 50 60 70 80 90 100
ICC (mA)
www.maximintegrated.com
Maxim Integrated | 5