LTM8049 Datasheet, PDF (1/18 Pages) Linear Integrated Systems – Dual SEPIC or Inverting Module DC DC Converter

LTM8049
Dual SEPIC or Inverting
µModule DC/DC Converter
FEATURES
nn _{Two Complete Switch Mode Power Supplies}
nn _{SEPIC or Inverting Topology}
nn _{Wide Input Voltage Range: 2.6V to 20V}
nn _{2.5V to 24V or –2.5V to –24V Output Voltage}
nn _{1A at 5VOUT from 12VIN}
nn _{Selectable Switching Frequency: 200kHz to 2.5MHz}
nn _{Power Good Outputs for Event Based Sequencing}
nn _{User Configurable Undervoltage Lockout}
nn _{(e4) RoHS Compliant Package with Gold Pad Finish}
nn _{Low Profile 15mm × 9mm × 2.42mm Surface Mount}
BGA Package
APPLICATIONS
nn _{Battery Powered Regulator}
nn _{Local Negative Voltage Regulator}
nn _{Low Noise Amplifier Power}
DESCRIPTION
The LTM^®8049 is a Dual SEPIC/Inverting µModule^® (power
module) DC/DC Converter. Each of the two outputs can
be easily configured as a SEPIC or Inverting converter by
simply grounding the appropriate output rail. The LTM8049
includes power devices, inductors, control circuitry and
passive components. All that is needed to complete the
design are input and output caps, and small resistors to
set the output voltages and switching frequency. Other
components may be used to control the soft-start and
undervoltage lockout.
The LTM8049 is packaged in a thermally enhanced, com-
pact (15mm × 9mm) over-molded Ball Grid Array (BGA)
package suitable for automated assembly by standard sur-
face mount equipment. The LTM8049 is RoHS compliant.
L, LT, LTC, LTM, Linear Technology, the Linear logo and µModule are registered trademarks of
Linear Technology Corporation. All other trademarks are the property of their respective owners.
TYPICAL APPLICATION
±12V_OUT from 2.7V_IN to 20V_IN
V_IN
2.7V TO 20V
4.7µF
×2
80.6k
1MHz
80.6k
1MHz
V_IN1
RUN1
RT1
CLKOUT1
SYNC2
RT2
V_IN2
RUN2
SYNC1
LTM8049
V_OUT1P
FBX1
V_OUT1N
130k
V_OUT1
12V
22µF
V_OUT2P
FBX2
V_OUT2N
143k
47µF
V_OUT2
–12V
PINS NOT USED: SS1, SS2, PG1, PG2, CLKOUT2, SHARE1, SHARE2
8049 TA01a
Maximum Load Current vs V_IN
1.5
1.0
0.5
0
0
5
10
15
20
V_IN (V)
8049 TA01
8049f
For more information www.linear.com/LTM8049
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