IR3856MTRPBF International Rectifier, IR3856MTRPBF Datasheet - Page 16

• 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
0
0
SS
Vsns
0
PGood
0.7V
1.4V
TIMING DIAGRAM OF PGOOD FUNCTION
2.1V
Fig.9a IR3856 Non-Tracking Operation (Seq=Vcc)
+/-5% for Min/Max
0.85*Vref(typical),
100ns(typical) Delay
Fig.9b IR3856 Tracking Operation
256/Fs
+/-5% for Min/Max
1.15*Vref(typical),
A
At point “A” the power Good
signal goes low, high drive turns
off, low drive turns on till Vsns
is above Over Voltage threshold
and the device latches off. POR
(Vcc/Enable) needs to be
recycled for new start up.
100ns(typical) Delay
IR3856MPbF
PGood window
PD-97528
16