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TC115

PFM/PWM Step-Up DC/DC Converter

Status: In Production

Features:

  • High Efficiency at Low Output Load Currents via PFM Mode
  • Guaranteed Start-Up at 0.9V
  • 80 µA (typ.) Supply Current
  • 85% (typ.) Efficiency at 100 mA
  • 140 mA Typical Output Current @ VIN = 2.0V
  • Low Power Shutdown Mode
  • No External Switching Transistor Needed
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Overview
Documents
Development Environment
RoHS Information
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Device Overview

Summary

The TC115 is a high-efficiency step-up DC/DC converter for small, low input voltage or battery powered sys-tems. This device has a guaranteed start-up voltage of 0.9V and a typical supply current of 80 µA. Phase compensation and soft-start circuitry are included on-chip. Unlike conventional PWM step-up converters, the TC115 automatically shifts to pulse frequency modulation (PFM) at low loads, resulting in reduced supply current and improved efficiency. The TC115 requires only an external diode, an inductor, and a capacitor, and supports typical output currents of 140 mA. Supply current is reduced to less than 0.5 µA, max when SHDN input is brought low. Small size, low installed cost, and low supply current make the TC115 step-up converter ideal for use in a wide range of battery powered systems.

Additional Features
    • High Efficiency at Low Output Load Currents via PFM Mode
    • Guaranteed Start-Up at 0.9V
    • 80 µA (typ.) Supply Current
    • 85% (typ.) Efficiency at 100 mA
    • 140 mA Typical Output Current @ VIN = 2.0V
    • Low Power Shutdown Mode
    • No External Switching Transistor Needed
Parametrics
Name
Value
Regulator Type
Step Up (Boost)
Input Voltage Range Min (V)
2.2
Input Voltage Range Max (V)
10
Output Voltage Range Min (V)
3
Output Voltage Range Max (V)
5
Output Current (mA) max
140
Quiescent Current (mA) typ
0.08
Switching Frequency (kHz)
100
Operating Temp Range
-40 to 85
Duty Cycle Max (%)
92
SHUTDOWN Current (µA) (Typ)
0.5
Light Load Efficiency Mode
Yes
Switch current (A) typ
0.35

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RoHS Information

Part Number
Device Weight (g)
Shipping Weight (grams)
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
TC115301EMTTR
0.016000
0.136000
5
SOT-89
-
Matte Tin
e3
TC115311EMTTR
0.016000
0.136000
5
SOT-89
-
Matte Tin
e3
TC115331EMTTR
0.016000
0.136000
5
SOT-89
-
Matte Tin
e3
TC115501EMTTR
0.016000
0.136000
5
SOT-89
-
Matte Tin
e3
To see a complete listing of RoHS data for this device, please Click here
Shipping Weight = Device Weight + Packing Material weight. Please contact sales office if device weight is not available.

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