Micrel, Inc.
MIC3291
Ordering Information
Part Number
1
MIC3291-18YD6
MIC3291-25YD6
MIC3291-18YML
MIC3291-25YML
Notes:
1.
2.
3.
4.
Other options available. Contact Micrel Marketing for details.
MLF is a GREEN RoHS compliant package. Lead finish is NiPdAu. Mold compound is Halogen Free.
MLF
®
®
Marking Code
4
W18F
W25F
WAF
Output Voltage
Adjustable
Adjustable
Adjustable
Adjustable
Over-Voltage
Protection
18V
25V
18V
25V
Junction
Temperature Range
−40°C
to
+125°C
−40°C
to
+125°C
−40°C
to
+125°C
−40°C
to
+125°C
Package
2,3
TSOT23-6
TSOT23-6
2mm
×
2mm MLF
®
2mm
×
2mm MLF
®
WBF
●
= Pin 1 identifier.
Overbar ( ¯ )and Underbar symbols ( _ ) may not be to scale.
Pin Configuration
2mm × 2mm 8-Pin MLF
®
(ML)
(Top View)
TSOT23-6 (D6)
(Top View)
Pin Description
Pin Number
8-pin MLF
1
2
3
4
5
6
7
8
Pad
®
Pin Number
SOT23-6
6
5
4
−
−
3
1
2
−
Pin Name
OUT
VIN
DC
GND
NC
FB
SW
GND
GND
Pin Name
Output and over-voltage protection (output)
Supply (Input): 2.5V to 6.5V for internal circuitry.
Single pin digital control. See diagrams.
Ground (Return): Ground.
No connect (no internal connection to die)
Feedback (Input): Output voltage sense node. Connect the cathode of the LED
to this pin.
Switch Node (Input): Internal power BIPOLAR collector.
Ground (Return): Ground.
Ground (Return): Backside pad.
September 2010
2
M9999-092810
(408) 944-0800
MICREL [ MICREL SEMICONDUCTOR ]
