mic2291yd5 Micrel Semiconductor, mic2291yd5 Datasheet - Page 2

• Manufacturer Part Number: mic2291yd5
• Description: Mic2291 1.2a Pwm Boost Regulator Photo Flash Led Driver
• Manufacturer: Micrel Semiconductor

Ordering Information
Pin Configuration
Pin Description
Micrel, Inc.
May 2007
MIC2291-15BML
MIC2291-34BML
MIC2291-15YML
MIC2291-34YML
Notes:
*
**
Pin Number
Part Number
MIC2291BD5
MIC2291YD5
TSOT23-5
Under bar / Over bar symbol may not be to scale.
Over bar symbol located after Pin 1 identifier.
―
―
―
―
―
1
2
3
4
5
5-Pin TSOT23 (D5)
EN
FB GND
3
4
Pin Number
2x2 MLF-8
Marking*
2
SSAA
SSAA
STA**
STC**
EP
STC
STA
7
6
3
2
1
4
8
5
SW
VIN
1
5
Overvoltage
Protection
Pin Name
AGND
PGND
GND
GND
OVP
15
34
―
―
15
34
VIN
SW
EN
NC
FB
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
Pin Name
Switch node (Output): Internal power BIPOLAR collector.
Ground (Return): Ground.
Feedback (Input): Output voltage sense node. Connect the cathode
of the LED to this pin. Connect current set resistor from this pin to
ground.
Enable (Input): Logic high (≥1.5V) enables regulator. Logic low
(≤0.4V) shuts down regulator.
Supply (Input): Input Voltage.
Overvoltage protection (Input): Connect to the output to clamp the
maximum output voltage.
Analog ground. Internally connected to ground.
Power ground.
No connect (no internal connection to die).
Ground (Return): Exposed backside pad.
Temp. Range
Junction
2
8-Pin 2mm x 2mm MLF
8-Pin 2mm x 2mm MLF
8-Pin 2mm x 2mm MLF
8-Pin 2mm x 2mm MLF
AGND
5-Pin Thin SOT23
5-Pin Thin SOT23
8-Pin 2mm x 2mm MLF
OVP
VIN
EN
Package
1
2
3
4
EP
®
®
®
®
8
7
6
5
®
PGND
SW
FB
NC
(ML)
Lead Finish
Standard
Standard
Standard
Pb-Free
Pb-Free
Pb-Free
M9999-051507
MIC2291