MIC2297-38YML TR Micrel Inc, MIC2297-38YML TR Datasheet - Page 2
![1.2MHz 1.2A PWM Boost Converter ( )](/photos/7/34/73421/576-10-mlf_sml.jpg)
MIC2297-38YML TR
Manufacturer Part Number
MIC2297-38YML TR
Description
1.2MHz 1.2A PWM Boost Converter ( )
Manufacturer
Micrel Inc
Type
Backlight, White LEDr
Datasheet
1.MIC2297-42YML_TR.pdf
(11 pages)
Specifications of MIC2297-38YML TR
Topology
PWM, Step-Up (Boost)
Number Of Outputs
1
Internal Driver
Yes
Type - Primary
Backlight, Flash/Torch
Type - Secondary
White LED
Frequency
525kHz ~ 6.75kHz
Voltage - Supply
2.5 V ~ 10 V
Mounting Type
Surface Mount
Package / Case
10-MLF®, QFN
Operating Temperature
-40°C ~ 125°C
Current - Output / Channel
20mA
Internal Switch(s)
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Voltage - Output
-
Efficiency
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
576-1736-2
MIC2297-38YMLTR
MIC2297-38YMLTR
MIC2297-38YMLTR
MIC2297-38YMLTR
Ordering Information
Pin Configuration
Pin Description
Micrel, Inc.
Mach 2008
MIC2297-15YML
MIC2297-42YML
* (
Part Number
) Top bar symbol after PI indicator identifying Pb-Free may not be to scale.
Pin Number
EPad
10
1
2
3
4
5
6
7
8
9
Mark Code*
S115
S142
Pin Name
PGND
COMP
AGND
GND
OVP
BRT
REF
VIN
SW
EN
FB
Voltage Protection
Output Over
COMP
PGND
OVP
VIN
EN
15V
42V
Pin Function
Ground (Return).
Over Voltage Protection (Input): Connect to the output to
clamp the maximum output voltage. A resistor divider from
this pin to ground could be used to raise the OVP level of
the 15V OVP option.
Supply (Input): Input voltage.
Enable (Input): Logic high enables regulator. Logic low shuts
down regulator.
Compensation Pin.
Analog Ground.
Brightness Control (Input): Either an analog (DAC) or filtered
PWM signal can be used. The gain equation is: VFB =
VBRT / 5. This pin should be left open if the brightness
function is not used. In that case, the FB will be set to its
default value of 200mV.
Reference Voltage (Output): This node is equal to the
voltage on the FB pin. A capacitor from REF to ground
should be used to filter the BRT voltage if PWM dimming is
implemented. A capacitor from REF to ground can also be
used to implement a soft-start function. This pin can be left
open if not used.
Feedback (Input): Output voltage sense node. Default value
is 200mV. Connect the cathode of the LED chain to this pin.
Connect current set resistor from this pin to ground.
Switch Node (Output): Internal power BIPOLAR collector.
Ground (Return): Backside pad.
1
2
3
4
5
–40°C to 125°C
–40°C to 125°C
2
Temp. Range
Junction
10 SW
9
8
7
6
FB
REF
BRT
AGND
10-Pin 2.5 x2.5 MLF
10-Pin 2.5 x2.5 MLF
Package
®
®
Lead Finish
Pb-Free
Pb-Free
M9999-032708
MIC2297