DC1623A Linear Technology, DC1623A Datasheet - Page 19

• Manufacturer Part Number: DC1623A
• Description: BOARD EVAL LTM8003
• Manufacturer: Linear Technology
• Series: µModuler

Specifications of DC1623A

• Design Resources: LTM8033 Spice Model LTM8033 Gerber Files DC1623A Design Files DC1623A Schematic
• Main Purpose: DC/DC, Step Down
• Outputs And Type: 1, Non-Isolated
• Power - Output: -
• Voltage - Output: 3.3V
• Current - Output: 3A
• Voltage - Input: 5.5 ~ 36 V
• Regulator Topology: Buck
• Frequency - Switching: 425kHz
• Board Type: Fully Populated
• Utilized Ic / Part: LTM8033
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

APPLICATIONS INFORMATION
TYPICAL APPLICATIONS
resulting in impaired performance or reliability. Please
refer to the PCB Layout section for printed circuit board
design suggestions.
The LTM8033 is equipped with a thermal shutdown that
will inhibit power switching at high junction temperatures.
The activation threshold of this function, however, is above
125°C to avoid interfering with normal operation. Thus,
it follows that prolonged or repetitive operation under a
condition in which the thermal shutdown activates neces-
3.6V TO 36V
V
3.6V TO 15V
IN
V
IN
4.7μF
NOTE: DO NOT ALLOW V
2.8V TO 25V
4.7μF
10μF
10μF
0.8V Step-Down Converter
1.8V Step-Down Converter
182k
147k
V
BIAS
RUN/SS
FIN
SHARE
V
BIAS
RUN/SS
FIN
SHARE
RT
RT
IN
IN
f = 230kHz
f = 285kHz
SYNC GND ADJ
SYNC GND ADJ
IN
LTM8033
LTM8033
+ BIAS TO BE GREATER THAN 56V.
sarily means that the internal components are subjected
to temperatures above the 125°C rating for prolonged
or repetitive intervals, which may damage or impair the
reliability of the device.
Finally, be aware that at high ambient temperatures the
internal Schottky diode will have significant leakage cur-
rent (see the Typical Performance Characteristics section)
increasing the quiescent current of the LTM8033.
PGOOD
PGOOD
V
V
AUX
AUX
OUT
OUT
30M
383k
8033 TA02
8033 TA03
400μF
400μF
V
0.8V
3A
V
1.8V
3A
OUT
OUT
LTM8033
19
8033f