MAX17127ETP+ Maxim Integrated Products, MAX17127ETP+ Datasheet - Page 14

• Manufacturer Part Number: MAX17127ETP+
• Description: IC WLED DVR SIX STRING 20TQFN
• Manufacturer: Maxim Integrated Products

Specifications of MAX17127ETP+

• Topology: PWM, Step-Up (Boost)
• Number Of Outputs: 6
• Internal Driver: Yes
• Type - Primary: Automotive, Backlight
• Type - Secondary: White LED
• Frequency: 250kHz ~ 1MHz
• Voltage - Supply: 5 V ~ 26 V
• Mounting Type: Surface Mount
• Package / Case: 20-WFQFN Exposed Pad
• Operating Temperature: -40°C ~ 85°C
• Current - Output / Channel: 30mA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Output: -
• Lead Free Status / Rohs Status: Details

Six-String WLED Driver with Integrated
Step-Up Converter
The MAX17127 can be placed into shutdown by pulling
the EN pin low. When a critical failure is detected, the
IC also enters shutdown mode. In shutdown mode, all
functions of the IC are turned off, including the 5V lin-
ear regulator. Only a crude linear regulator remains on,
providing a 3.3V (typ) output voltage to V
current-sourcing capability.
Figure 3. Startup Sequence
14
0V
0V
0V
0V
_____________________________________________________________________________________
DDIO
Shutdown
with 1FA
CHECK LED
STEP-UP REGULATOR
The boost converter switching frequency can be adjust-
ed by the external resistor on the FSLCT pin. The
switching frequency adjustable range is 250kHz to
1MHz. High-frequency (1MHz) operation optimizes the
regulator for the smallest component size at the expense
of efficiency due to increased switching losses. Low-
frequency (250kHz) operation offers the best overall effi-
ciency, but requires larger components and PCB area.
SOFT-START
MIN FB_ CONTROL
(1ms)
Frequency Selection
V
V
I
V
V
LED
DDIO
OUT
EN
IN