Key facts
- Brand
- Linear Technology
- Model
- LTC1148
- Industry
- Industrial
- Documents
- 3
- Languages
- EN
- Last added
- 2012-06-05
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Linear Technology AN54 Power Conversion Application Note
The document details the design of high-efficiency power supply circuits for portable computers and hand-held equipment, achieving efficiencies up to 95%. It focuses on a series of controllers including the LTC1142, LTC1143, LTC1147, LTC1148, and LTC1149.
Read onlineLinear Technology LTC1148 specifications
| Maximum Efficiency | Up to 95% |
|---|---|
| Output Current Capability | In excess of 10A |
| Low Current Efficiency Threshold | As low as 10mA |
Source: Linear Technology AN54 Power Conversion Application Note
All Linear Technology LTC1148 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
How to use the product for one specific task, with worked examples.
Questions answered in these manuals
What is the main goal for power supplies in portable computers?
High efficiency is frequently the main goal to minimize power drain on input sources and heat buildup.
From: Linear Technology AN54 Power Conversion Application Note
What technology allows for high efficiency at low output currents?
Automatic Burst Mode operation is used at low currents to maximize battery life during sleep or standby modes.
From: Linear Technology AN54 Power Conversion Application Note
How low is the standby current in sleep mode?
The standby (sleep) current can be as low as 160 µA at light loads.
What efficiency does the LTC1148 achieve?
The LTC1148 series provides ultrahigh efficiency of over 95 %.
Which pin is used for the external timing capacitor that sets the switching frequency?
Pin 4 (Cy) is the external timing capacitor pin that determines the operating frequency.
What is the typical shutdown current of the LTC1148 series?
The shutdown current is typically 10 pA (up to 20 pA depending on voltage).