IR3856MTRPBF International Rectifier, IR3856MTRPBF Datasheet - Page 31

• Manufacturer Part Number: IR3856MTRPBF
• Description: IC BUCK SYNC ADJ 6A 17PQFN
• Manufacturer: International Rectifier
• Series: SupIRBuck™r
• Type: Step-Down (Buck)r

Specifications of IR3856MTRPBF

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 0.7 ~ 18.9 V
• Current - Output: 6A
• Frequency - Switching: 250kHz ~ 1.5MHz
• Voltage - Input: 1.5 ~ 21 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 17-PowerVQFN
• Power - Output: 1.11W
• Primary Input Voltage: 21V
• No. Of Outputs: 1
• Output Voltage: 18.9V
• Output Current: 6A
• No. Of Pins: 17
• Operating Temperature Range: -40°C To +125°C
• Peak Reflow Compatible (260 C): Yes
• Rohs Compliant: Yes
• Leaded Process Compatible: Yes
• Part Status: Preferred
• Package: PQFN / 4 x 5
• Circuit: Single Output
• Iout (a): 6
• Switch Freq (khz): 250 - 1500
• Input Range (v): 1.5 - 21
• Output Range (v): 0.7 - 0.9*Vin
• Ocp Otp Uvlo Pre-bias Soft Start And: PGOOD + EN + SEQ + OVP + SYNC
• Design Tool: Yes
• Server Storage: Yes
• Routers Switches: Yes
• Base Station Telecom: Yes
• Digital Home Media: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Rev2.0
Single point
connection between
AGND & PGND; It
should be close to the
SupIRBuck, kept
away from noise
sources.
Fig. 28c. IRDC3856 demoboard layout
considerations – Mid Layer 1
Fig. 28d. IRDC3856 demoboard layout
considerations – Mid Layer 2
Fig. 28b. IRDC3856 demoboard layout
considerations – Bottom Layer
Vin
AGnd
PGnd
SW
PGnd
PGnd
Vout
IR3856MPbF
Feedback trace should be
kept away form noise
sources
Use separate trace for
connecting Boost cap and
Rocset to the switch node
and with the minimum
length traces. Avoid big
loops.
PD-97528
31