DocumentationDatasheet
Reliability Data
cad_symbol
Features
- Start-Up at 0.7V Typical, 0.88V Guaranteed
- Up to 95% Efficiency
- Output Disconnect and Inrush Current Limit
- 3V Fixed Output Voltage
- Delivers 65mA at 3V from a 1V Input or 160mA from a 1.8V Input
- Burst Mode® Operation: IQ = 7μA
- VIN: 0.5V to 4.5V
- Only Three External Components
- VIN > VOUT Operation
- <1μA Shutdown Current
- Anti-Ringing Control
- Short-Circuit and Overtemperature Protection
- Tiny 6-Pin SC70 Package
Typical Application
Description
The LTC3525L-3 is a high efficiency synchronous step-up DC/DC converter with output disconnect that can start up with an input as low as 0.7V. It offers a compact, high efficiency alternative to charge pumps in single cell or dual cell alkaline applications. Only three small external components are required. The LTC3525L-3 generates a fixed 3V output voltage.
The device includes a 0.5 N-channel MOSFET switch and a 0.85 P-channel synchronous rectifier. Peak switch current ranges from 150mA to 400mA, depending on load, providing enhanced efficiency. Quiescent current is an ultralow 7μA, maximizing battery life in portable applications.
Other features include <1μA shutdown current, antiringing control and thermal shutdown. The LTC3525L-3 is available in a tiny 6-pin SC70 package.
| Vout | Min Startup Voltage | Features | |
| LTC3525-3/3.3/5 | 3V/3.3V/5V | 1V | Output Disconnect |
| LTC3525D-3.3 | 3.3V | 0.85V | Pass Through Mode |
| LTC3525L-3 | 3V | 0.85V | Output Disconnect |
SC-70
Package Variations and Pricing
| Part Number | Package | Pins | Temp | Price (1-99) |
Price (1k)* |
|---|---|---|---|---|---|
| LTC3525DESC6-3.3#TRMPBF | SC70 | 6 | E | $2.57 | $1.86 |
| LTC3525DESC6-3.3#TRPBF | SC70 | 6 | E | $2.57 | $1.81 |
| LTC3525ESC6-3#TRMPBF | SC70 | 6 | E | $2.57 | $1.83 |
| LTC3525ESC6-3#TRPBF | SC70 | 6 | E | $2.57 | $1.81 |
| LTC3525ESC6-3.3#TRMPBF | SC70 | 6 | E | $2.57 | $1.83 |
| LTC3525ESC6-3.3#TRPBF | SC70 | 6 | E | $2.57 | $1.81 |
| LTC3525ESC6-5#PBF | SC70 | 6 | E | $2.57 | |
| LTC3525ESC6-5#TRMPBF | SC70 | 6 | E | $2.57 | $1.83 |
| LTC3525ESC6-5#TRPBF | SC70 | 6 | E | $2.57 | $1.81 |
| LTC3525LESC6-3#TRMPBF | SC70 | 6 | E | $2.71 | $1.95 |
| LTC3525LESC6-3#TRPBF | SC70 | 6 | E | $2.71 | $1.90 |
| LTC3525ISC6-5#TRMPBF | SC70 | 6 | I | $2.86 | $2.00 |
| LTC3525ISC6-3#TRMPBF | SC70 | 6 | I | $2.86 | $2.00 |
| LTC3525ISC6-3#TRPBF | SC70 | 6 | I | $2.86 | $2.00 |
| LTC3525ISC6-5#PBF | SC70 | 6 | I | $2.86 | |
| LTC3525DISC6-3.3#TRMPBF | SC70 | 6 | I | $2.86 | $2.05 |
| LTC3525ISC6-3#PBF | SC70 | 6 | I | $2.86 | |
| LTC3525DISC6-3.3#PBF | SC70 | 6 | I | $2.86 | |
| LTC3525DISC6-3.3#TRPBF | SC70 | 6 | I | $2.86 | $2.00 |
| LTC3525ISC6-3.3#TRPBF | SC70 | 6 | I | $2.86 | $2.00 |
| LTC3525ISC6-3.3#PBF | SC70 | 6 | I | $2.86 | |
| LTC3525ISC6-5#TRPBF | SC70 | 6 | I | $2.86 | $2.00 |
| LTC3525ISC6-3.3#TRMPBF | SC70 | 6 | I | $2.86 | $2.00 |
| LTC3525ESC6-3.3 | SOT | 6 | E | $5.14 | |
| LTC3525ESC6-3.3#TR | SC70 | 6 | E | $5.14 | $3.62 |
| LTC3525ESC6-5#TR | SC70 | 6 | E | $5.14 | $3.62 |
| LTC3525ESC6-3 | SC70 | 6 | E | $5.14 | |
| LTC3525ESC6-3#TR | SC70 | 6 | E | $5.14 | $3.62 |
| LTC3525DESC6-3.3#TR | SC70 | 6 | E | $5.14 | $3.62 |
| LTC3525ESC6-3#TRM | SC70 | 6 | E | $5.14 | $3.66 |
| LTC3525ESC6-3.3#TRM | SC70 | 6 | E | $5.14 | $3.66 |
| LTC3525ESC6-5#TRM | SC70 | 6 | E | $5.14 | $3.66 |
| LTC3525DESC6-3.3#TRM | SC70 | 6 | E | $5.14 | $3.72 |
| LTC3525ISC6-3 | SC70 | 6 | I | $5.72 | |
| LTC3525ISC6-3#TR | SC70 | 6 | I | $5.72 | $4.00 |
| LTC3525ISC6-3.3#TR | SC70 | 6 | I | $5.72 | $4.00 |
| LTC3525ISC6-5#TR | SC70 | 6 | I | $5.72 | $4.00 |
| LTC3525DISC6-3.3#TR | SC70 | 6 | I | $5.72 | $4.00 |
Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.