2.5MHz 1.5A High Efficiency Low IQ Synchronous Boost
Description
The KTC2115 features a high-efficiency, micropower synchronous boost for Lithium-Ion/Polymer battery applications. It offers true output disconnect to achieve a shutdown quiescent current of less than 1.0µA, extending battery life.
High efficiency over a wide output current range is achieved by selecting PWM/PFM mode automatically depending on the output load conditions.
A Pass Through mode allows to transfer the input power directly to output (not boosting) with over current protection.
The constant on-time design does not require any external compensation components, simplifying the design and providing ultra-fast transient response.
The inrush current-limiting feature minimizes the voltage droop on the battery supply when the device is turned on.
The KTC2115 is packaged in advanced, RoHS and Green compliant, 1.260mm x 1.290mm, 9-balls Wafer-Level ChipScale Package (WLCSP).
Features
- Wide Input Voltage Range: 2.7V to 5.5V
- Output Voltage 5.0V
- IOUT up to 1.5 A at VOUT = 5.0 V, VIN ≥ 3 V
- 2.5MHz PWM Switching Frequency
- High Efficiency and Low Quiescent Current
- Over 95% Efficiency
- 1µA Shutdown Current
- 33µA Quiescent Current in Pass Through
- 56µA Quiescent Current in PFM Operation
- ±2% DC Voltage Accuracy in PWM mode
- Undervoltage Lockout (UVLO)
- Short Circuit Protection
- Hiccup Current Limit
- Over Temperature Protection
- Selectable Pass-Through Mode or True Load Disconnect During Shutdown
- Output Capacitor Pre-Charge and Soft-Start
- Pb-free 9-Bump, WLCSP 1.260mm x 1.290mm
- RoHS and Green Compliant
- -40°C to 85°C Operating Temperature Range
Applications
- Smartphones and Tablets
- Mobile Internet Devices
- USB OTG
- Wearables
- Portable Devices
Packaging Information
| Package | Dimensions | Bumps | Package Code |
| WLCSP33-9 | 1.260mm x 1.290mm x 0.620mm | 9 | CAB |
Parameters
| Vin (min) | Vin (max) | Vout | Iout | IQ | Control | FSQ |
| 2.5V | 5.5V | 5.0V | 1.5A | 56µA | EN | 2.5MH |
Technical Documentation
| Description | Documents | Type |
|---|---|---|
| Datasheet | KTC2115-04a | |
| Package Outline Drawing | WLCSP33-9 CAB POD |
Purchase
| Purchase Options |
|---|
| Buy from Digi-Key |
| Buy from Mouser |