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參數資料
| 型號： | LSM-2.5/16-W3 |
| 元件分類： | 電源模塊 |
| 英文描述： | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
| 文件頁數： | 1/12頁 |
| 文件大小： | 973K |
| 代理商： | LSM-2.5/16-W3 |
PRELIMINARY
+INPUT
(2)
COMMON
(3)
PWM
CONTROLLER
CURRENT
SENSE
REFERENCE &
ERROR AMP
VCC
ON/OFF
CONTROL
(1)
VOUT
TRIM
(5)
+OUTPUT
(4)
+SENSE
(6)
COMMON
(3)
Single Output
LSM-16A W3 Models
Features
Non-Isolated, 3-5.5VIN, 0.75-3.3VOUT
16 Amp DC/DC’s in SMT Packages
Figure 1. Simplied Schematic
A SUBSIDIARY OF C&D TECHNOLOGIES
■
Step-down, wide input buck regulators
for distributed 3-5V power architectures
3V to 5V wide-input range
0.75/1/1.2/1.5/1.8/2/2.5/3.3VOUT @16A
Non-isolated, xed-frequency,
synchronous-rectier topology
Tape and reel SMT package
±1% setpoint accuracy
Efciencies to 95% @ 16 Amps
Noise as low as 30mVp-p
Stable no-load operation
Remote on/off control
Sense pin and output voltage trim
No derating to +65°C with no fan
UL/IEC/EN60950 certication pending
EMC compliant
DATEL, Inc., Manseld, MA 02048 (USA) Tel: (508)339-3000, (800)233-2765 Fax: (508)339-6356 Email: sales@datel.com Internet: www.datel.com
LSM Series W3 SMT's (surface-mount packages) are ideal building blocks for
emerging, on-board power-distribution schemes in which isolated 3 to 5.5V buses
deliver power to any number of non-isolated, step-down buck regulators. LSM W3
DC/DC's accept 3 to 5.5 Volts and convert it, with the highest efciency in the small-
est space, to a 0.75, 1, 1.2, 1.5, 1.8, 2, 2.5, or 3.3 Volt output fully rated at 16 Amps.
LSM W3's are ideal point-of-use/load power processors. They typically require
no external components. Their surface-mount packages occupy a mere 1.3" x 0.53"
(33.0 x 13.5mm), and are only 0.34 inches (8.6mm) high.
The LSM's best-in-class power density is achieved with a fully synchronous,
xed-frequency, buck topology that also delivers: high efciency (97%, 3.3VOUT, 8A),
low noise (30mVp-p typ.), tight line/load regulation (±0.1%/±0.25% max.), quick step
response (30sec), stable no-load operation, and no output reverse conduction.
The fully functional LSM’s feature output overcurrent detection, continuous
short-circuit protection, over-temperature protection, a remote on/off control pin
(pull low to disable), an output-voltage trim function, and a sense pin. High efciency
enables the LSM W3's to deliver rated output currents of 16 Amps at ambient tem-
peratures to +65°C with natural convection.
If your new system boards call for multiple supply voltages, check out the eco-
nomics of on-board 3-5.5V distributed power. If you don't need to pay for multiple
isolation barriers, DATEL's non-isolated LSM W3 SMT's will save you money.
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