LTM4615IV#PBF Linear Technology, LTM4615IV#PBF Datasheet - Page 2

• Manufacturer Part Number: LTM4615IV#PBF
• Description: IC SWIT REG BUCK 4A ADJ 144LGA
• Manufacturer: Linear Technology
• Series: µModuler
• Type: Point of Load (POL) Non-Isolatedr

Specifications of LTM4615IV#PBF

• Design Resources: LTM4615 Spice Model
• Output: 0.8 ~ 5 V
• Number Of Outputs: 3
• Power (watts): 12W
• Mounting Type: Surface Mount
• Voltage - Input: 2.38 ~ 5.5 V
• Package / Case: 144-LGA
• 1st Output: 0.8 ~ 5 VDC @ 4A
• 2nd Output: 0.8 ~ 5 VDC @ 4A
• 3rd Output: 0.8 ~ 5 VDC @ 4A
• Size / Dimension: 0.59" L x 0.59" W x 0.11" H (15mm x 15mm x 2.8mm)
• Power (watts) - Rated: 12W
• Operating Temperature: -40°C ~ 125°C
• Efficiency: 95%
• Primary Input Voltage: 5.5V
• No. Of Outputs: 3
• Output Voltage: 5V
• Output Current: 1.5A
• Voltage Regulator Case Style: LGA
• No. Of Pins: 144
• Operating Temperature Range: -40°C To +125°C
• Rohs Compliant: Yes
• Dc To Dc Converter Type: Step Down
• Pin Count: 144
• Input Voltage: 5.5V
• Switching Freq: 1250KHz
• Package Type: LGA
• Output Type: Adjustable
• Switching Regulator: Yes
• Mounting: Surface Mount
• Input Voltage (min): 2.375V
• Operating Temperature Classification: Automotive
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

DEMO MANUAL DC1367A
QUICK START PROCEDURE
Demonstration circuit 1367A is an easy way to evaluate
the performance of the LTM4615. Please refer to Figure 1
for proper measurement equipment setup and follow the
procedure below:
1. Place jumpers in the following positions for a typical
2. With power off, preset the loads to 0A and V
3. Turn on the power at the input. The output voltage
+
–
2
V
1.8V, 1.2V and 1.0V application:
to be 5V. Connect the input power supply, load and
meters as shown in Figure 1.
between VO1+ and VO1– should be 1.8V ± 2%, the
voltage between VO2+ and VO2– should be 1.2V ± 2%,
and the voltage between VO3(LDO) and GND should be
1.0V ±2%.
0A TO
LOAD
4A
DISABLED
TRACK1
–
A
+
Figure 1. Test Setup of DC1367A
RUN1
–
–
ON
V
IN
V
+
–
+
+
A
+
A
0A TO
V
LOAD
–
+
1.5A
–
RUN2
ON
IN
supply
DC1376 F01
+
A
4. Once the proper output voltage is established, adjust
5. VOUT1 can track another supply by connecting TP14,
6. VOUT2 is used as the input supply for the 1.5A LDO.
7. Because DC1367A is designed so VOUT2 tracks VOUT1
8. VIN1 and VIN2 are shorted on DC1367A through a 1mΩ
–
the load within the operating range and observe the
output voltage regulation, ripple voltage, efficiency and
other parameters. To measure input and output ripple,
please refer to Figure 2 for proper setup.
TRACK to the supply rail and setting JP1 to ENABLED.
When R8 equals RSET1, VOUT1 is set up for coincidental
tracking. VOUT2 is set up to coincidentally track VOUT1
as determined by resistors R6 and R7. Please refer to
the circuit schematic and data sheet.
Therefore, if the jumper of JP3 (RUN2) is placed at OFF
position, both channel 2 and 3 will be turned off.
automatically, placing the JP2 (RUN1) to OFF position
turns off all three outputs. To disable tracking on VOUT2,
please remove R6 and R7 and connect TRACK2 to VIN2.
resistor, R10. If desired, remove R10 to allow separate
V
0A TO
LOAD
2.5A
Figure 2. Proper Scope Probe Placement for Measuring
Input or Output Ripple
IN1
and V
V
+
–
IN2
INPUT OR OUTPUT CAPACITOR
power supplies.
+
–
DC1376 F02
dc1367af