MAX16812ATI+ Maxim Integrated Products, MAX16812ATI+ Datasheet - Page 8

• Manufacturer Part Number: MAX16812ATI+
• Description: IC LED DRIVR HIGH BRIGHT 28-TQFN
• Manufacturer: Maxim Integrated Products
• Type: HBLED Driverr

Specifications of MAX16812ATI+

• Constant Current: Yes
• Topology: PWM, SEPIC, Step-Down (Buck), Step-Up (Boost)
• Number Of Outputs: 1
• Internal Driver: Yes
• Type - Primary: Automotive
• Type - Secondary: High Brightness LED (HBLED)
• Frequency: 125kHz ~ 500kHz
• Voltage - Supply: 5.5 V ~ 76 V
• Mounting Type: Surface Mount
• Package / Case: 28-TQFN Exposed Pad
• Operating Temperature: -40°C ~ 125°C
• Internal Switch(s): Yes
• Number Of Segments: 2
• Low Level Output Current: 1.2 mA
• High Level Output Current: 1 A
• Operating Supply Voltage: 5.5 V to 76 V
• Maximum Supply Current: 2.5 mA
• Maximum Power Dissipation: 2759 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: -
• Efficiency: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Integrated High-Voltage LED Driver
with Analog and PWM Dimming Control
Figure 1. Functional Diagram
8
_______________________________________________________________________________________
H_REG
L_REG
TGRM
DIM
REF
HV
OV
LV
EN
RT
IN
1.238V
LOW TO DISCHARGE
PREG
LDOL
2μs PULSE
LDOH
3.88V
POR
CMP
CMP
OSC
1X
UVLO/
POR
BG
1.238V
SIGNAL
DIM
SGND
1.2X
1.1X
1X
V
REF
OVP
CONTROL
RAMP
DIM
REF
LOGIC
EN
DRMP
S
R
CMP
MAX16812
LATCH
IHI
V
V
RAMP
Q
REFI
= 1.2V
= 0.3V
DS
G1
CMP
CSA
HICCUP
0.5V
t
PWM
X1
D
I
LIM
= 200ns
AGND
1.2V
0.6V
AMPLIFIER
DIMMING
ERROR
AND
S/H
SGND
V
DD
2.5V
V
ADIM
BE
X0.2
DD
DGT
CS+
CS-
LX
LX
SRC
SRC
GT
DRV
SLP
COMP
FB
CS_OUT
REFI