MAX16820ATT+T Maxim Integrated Products, MAX16820ATT+T Datasheet - Page 5

• Manufacturer Part Number: MAX16820ATT+T
• Description: IC LED DRIVER HIGH BRIGHT 6-TDFN
• Manufacturer: Maxim Integrated Products
• Type: HBLED Driverr

Specifications of MAX16820ATT+T

• Constant Current: Yes
• Topology: PWM, Step-Down (Buck)
• Number Of Outputs: 1
• Internal Driver: No
• Type - Primary: Automotive
• Type - Secondary: *
• Frequency: 2MHz
• Voltage - Supply: 4.5 V ~ 28 V
• Voltage - Output: 4 V ~ 5.5 V
• Mounting Type: Surface Mount
• Package / Case: 6-TDFN Exposed Pad
• Operating Temperature: -40°C ~ 125°C
• Current - Output / Channel: 1A
• Internal Switch(s): No
• Low Level Output Current: 1000000 uA (Typ)
• High Level Output Current: 50000 uA (Typ)
• Operating Supply Voltage: 4.5 V to 28 V
• Maximum Supply Current: 425 uA
• Maximum Power Dissipation: 1454 mW
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Efficiency: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: MAX16820ATT+T; MAX16820ATT+TTR

(V
noted.)
IN
= V
High-Side Current Sense and 5000:1 Dimming
PWM DIMMING AT 200Hz
PWM DIMMING AT 20kHz
DIM
(10% DUTY CYCLE)
(1% DUTY CYCLE)
= 12V, C
10µs/div
10µs/div
V
1 LED MAX16819
V
4 LEDS MAX16820
IN
IN
_______________________________________________________________________________________
VCC
= 12V, L = 47µH,
= 24V, L = 47µH,
2MHz High-Brightness LED Drivers with
= 1µF, R
MAX16819 toc09
MAX16819 toc12
SENSE
V
2V/div
0V
I
200mA/div
0A
V
2V/div
0V
I
200mA/div
0A
LED
LED
DIM
DIM
= 0.5Ω connected between IN and CSN. Typical values at T
Typical Operating Characteristics (continued)
PWM DIMMING EXPANDED
PWM DIMMING AT 20kHz
(50% DUTY CYCLE)
(90% DUTY CYCLE)
10µs/div
1µs/div
V
4 LEDS MAX16820
V
4 LEDS MAX16820
IN
IN
= 24V, L = 33µH,
= 24V, L = 33µH,
MAX16819 toc10
MAX16819 toc13
V
2V/div
0V
I
200mA/div
0A
V
2V/div
0V
I
200mA/div
0A
LED
LED
DIM
DIM
-0.5
-1.0
-1.5
-2.0
2.0
1.5
1.0
0.5
0
-40
I
-25 -10 5
LED
PWM DIMMING EXPANDED
VARIATION vs. TEMPERATURE
A
= +25°C, unless otherwise
(50% DUTY CYCLE)
TEMPERATURE (°C)
20
4µs/div
35 50 65
I
L = 47µH
LED(NOMINAL)
V
1 LED MAX16819
IN
= 12V, L = 47µH,
80
MAX16819 toc11
= 400mA
95
110
125
V
2V/div
0V
I
200mA/div
0A
LED
DIM
5