MCP1602-ADJI/MF Microchip Technology, MCP1602-ADJI/MF Datasheet - Page 11

• Manufacturer Part Number: MCP1602-ADJI/MF
• Description: IC,SMPS CONTROLLER,VOLTAGE-MODE,LLCC,8PIN,PLASTIC
• Manufacturer: Microchip Technology
• Type: Step-Down (Buck)r

Specifications of MCP1602-ADJI/MF

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 0.8 ~ 4.5 V
• Current - Output: 500mA
• Frequency - Switching: 2MHz
• Voltage - Input: 2.7 ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-DFN
• Output Voltage: 0.8 V to 4.5 V
• Output Current: 500 mA
• Input Voltage: 2.7 V to 5.5 V
• Switching Frequency: 2 MHz
• Operating Temperature Range: - 40 C to + 85 C
• Mounting Style: SMD/SMT
• Duty Cycle (max): 90 %
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

3.0
The descriptions of the pins are listed in
TABLE 3-1:
3.1
The SHDN pin is a logic-level input used to enable or
disable the device. A logic high (>45% of V
enable the regulator output. A logic-low (<15% of V
will ensure that the regulator is disabled.
3.2
The V
This voltage is derived by filtering the V
3.3
PG is an output level indicating that the output voltage
is within 94% of regulation. The PG output is configured
as an open-drain output.
3.4
A
analog portion of the ground plane (A
physical layout information in the Section 5.8 “PCB
Layout Information” section for ground recommenda-
tions.
3.5
For the adjustable output voltage options, connect the
center of the output voltage divider to the V
fixed-output voltage options, connect the output of the
buck regulator to this pin (V
© 2007 Microchip Technology Inc.
GND
MSOP
—
1
2
3
4
5
6
7
8
CC
is the analog ground connection. Tie A
PIN DESCRIPTIONS
Shutdown Control Input Pin
(SHDN)
Analog Input Supply Voltage Pin
(V
pin provides bias for internal analog functions.
Power-Good Output Pin (PG)
Analog Ground Pin (A
Output Voltage Sense Pin (V
V
OUT
CC
)
Exposed
)
DFN
Pad
PIN FUNCTION TABLE
1
2
3
4
5
6
7
8
OUT
V
FB
SHDN
A
P
Sym
V
).
PG
V
EP
GND
L
GND
/V
CC
IN
X
OUT
GND
IN
GND
Table
Shutdown Input Pin
Analog Input Supply Voltage Pin
Power Good Output Pin
Analog Ground Pin
Feedback Voltage (Adjustable Version) / Output Voltage (Fixed Version) Pin
Input Supply Voltage Pin
Buck Inductor Output Pin
Power Ground Pin
For the DFN package, the center exposed pad is a thermal path to remove
heat from the device. Electrically this pad is at ground potential and should
be connected to A
supply.
)
). See the
FB
GND
FB
3-1.
pin. For
IN
to the
/
) will
IN
)
GND
3.6
V
Connect a variable input voltage source to V
3.7
Connect L
carries large signal-level current; all connections
should be made as short as possible.
3.8
Connect all large signal level ground returns to P
These large signal level ground traces should have a
small loop area and length to prevent coupling of
switching noise to sensitive traces.
3.9
For the DFN package, connect the Exposed Pad to
A
the A
package.
IN
GND
is the buck regulator power input supply pin.
, with vias into the A
GND
Power Supply Input Voltage Pin
(V
Buck Inductor Output Pin (L
Power Ground Pin (P
Exposed Metal Pad (EP)
Description
X
plane will aid in heat removal from the
IN
directly to the buck inductor. This pin
)
GND
plane. This connection to
MCP1602
DS22061A-page 11
GND
)
IN
X
.
)
GND
.