MAX16831ATJ+ Maxim Integrated Products, MAX16831ATJ+ Datasheet - Page 7

• Manufacturer Part Number: MAX16831ATJ+
• Description: IC LED DRIVR HIGH BRIGHT 32-TQFN
• Manufacturer: Maxim Integrated Products
• Type: HBLED Driverr

Specifications of MAX16831ATJ+

• Topology: PWM, Step-Down (Buck), Step-Up (Boost)
• Number Of Outputs: 1
• Internal Driver: No
• Type - Primary: Automotive
• Type - Secondary: High Brightness LED (HBLED), RGB
• Frequency: 125kHz ~ 600kHz
• Voltage - Supply: 5.5 V ~ 76 V
• Mounting Type: Surface Mount
• Package / Case: 32-TQFN Exposed Pad
• Operating Temperature: -40°C ~ 125°C
• Internal Switch(s): Yes
• Efficiency: 90%
• Low Level Output Current: 76 mA
• High Level Output Current: 67 mA
• Operating Supply Voltage: 5.5 V to 76 V
• Maximum Supply Current: 4.5 mA
• Maximum Power Dissipation: 2758 mW
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Output: -
• Current - Output / Channel: -
• Lead Free Status / Rohs Status: Details

(V
550
500
450
400
350
300
250
200
150
100
CC
0.005
= V
PWM OSCILLATOR FREQUENCY
UVEN
vs. 1/RT CONDUCTANCE
0.015
= 14V, C
High-Voltage, High-Power LED Driver with
1/RT (kΩ
0.025
_______________________________________________________________________________________
REG1
-1
)
DRIVER (DRV) RISE TIME
0.035
= 1µF, C
DGT RISE TIME
1nF CAPACITOR CONNECTED
5nF CAPACITOR CONNECTED
40ns/div
40ns/div
0.045
REG2
Analog and PWM Dimming Control
FROM DGT TO AGND
FROM DRV TO AGND
V
HI
= 10µF, C
- V
MAX16831 toc18
LO
MAX16831 toc16
Typical Operating Characteristics (continued)
= 11V
200Hz DIMMING OPERATION
CLMP
2V/div
DGT OUTPUT
RISING
14V OFFSET
14V
2V/div
DRV OUTPUT
RISING
0V
2ms/div
= 0.1µF, R
T
MAX16831 toc14
= 25kΩ, R
DRIVER (DRV) FALL TIME
50% DIMMING
1A/div
10% DIMMING
1A/div
90% DIMMING
1A/div
0A
0A
0A
DGT FALL TIME
CS
1nF CAPACITOR CONNECTED
5nF CAPACITOR CONNECTED
40ns/div
= 0.1Ω, T
40ns/div
FROM DGT TO AGND
FROM DRV TO AGND
V
HI
A
100
- V
90
80
70
60
50
40
30
20
10
= +25°C, unless otherwise noted.)
0
MAX16831 toc19
MAX16831 toc17
LO
0
= 11V
LED CURRENT DUTY CYCLE
2V/div
DGT OUTPUT
FALLING
14V OFFSET
14V
2V/div
DRV OUTPUT
FALLING
0V
vs. DIM VOLTAGE
1
DIM VOLTAGE (V)
2
7
3