MIC4685WR Micrel Inc, MIC4685WR Datasheet - Page 2

• Manufacturer Part Number: MIC4685WR
• Description: IC REG BUCK 3A ADJ VOLT HE 7SPAK
• Manufacturer: Micrel Inc
• Series: SuperSwitcher™r
• Type: Step-Down (Buck)r

Specifications of MIC4685WR

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: Adj to 1.235V
• Current - Output: 3A
• Frequency - Switching: 200kHz
• Voltage - Input: 4 ~ 30 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: SPak-7
• Power - Output: 1.14W
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 576-1224

Ordering Information
Pin Configuration
Pin Description
Micrel, Inc.
January 2010
* RoHS compliant with ‘high-melting solder’ exemption.
Pin Number
MIC4685BR
Standard
4, Tab
1
2
3
5
6
7
Part Number
Pin Name
RoHS Compliant*
MIC4685WR EV
GND
MIC4685WR
SW
NC
BS
FB
EN
IN
Pin Function
Bootstrap Voltage Node (External Component): Connect to external boost
capacitor.
Supply (Input): Unregulated +4V to 30V supply voltage (34V transient)
Feedback (Input): Outback voltage feedback to regulator. Connect to 1.235V
tap of resistive divider.
Ground
Enable (Input): Logic high = enable; logic low = shutdown
Switch (Output): Emitter of NPN output switch. Connect to external storage
inductor and Schottky diode.
No Connect. Tie this pin-to-ground.
Voltage
Adj.
Adj.
7-Pin SPAK (R)
2
7 NC
6 SW
5 EN
4 GND
3 FB
2 IN
1 BS
–40° to +125°C
Temp. Range
Junction
Evaluation Board
7-Pin SPAK
Package
M9999-012610
MIC4685