Overview
The ADP2108AUJZ-1.3-R7 is a high-efficiency, low quiescent current step-down DC-to-DC converter manufactured by Analog Devices, Inc. This converter is designed to operate with input voltages ranging from 2.3 V to 5.5 V, making it suitable for various power sources including single lithium or lithium polymer cells, multiple alkaline or NiMH cells, PCMCIA, USB, and other standard power sources. The device features a proprietary high-speed current mode, constant frequency PWM control scheme for excellent stability and transient response. It is available in two different packages: 5-ball WLCSP and 5-lead TSOT.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices, Inc. |
| Package/Case | TSOT-5, 5-ball WLCSP |
| Input Voltage Range | 2.3 V to 5.5 V |
| Output Voltage | Fixed: 1.3 V (and other versions up to 3.3 V) |
| Maximum Load Current | 600 mA |
| Switching Frequency | 3 MHz |
| Quiescent Current | Typical: 18 μA |
| Operating Temperature | -40°C to 125°C (TA) |
| Mounting Style | SMD/SMT |
| RoHS Status | Lead free / RoHS Compliant |
Key Features
- High efficiency with peak efficiency of 95%
- Low quiescent current of 18 μA typical
- 3 MHz fixed frequency operation
- Internal synchronous rectifier for high efficiency
- Internal soft start to prevent input current over-shoot at startup
- Undervoltage lockout to prevent deep battery discharge
- 100% duty cycle low dropout mode
- Power save mode that reduces switching frequency under light load conditions
- Logic controlled shutdown with input disconnected from output, drawing less than 1 μA from the input source
Applications
- PDAs and palmtop computers
- Wireless handsets
- Digital audio and portable media players
- Digital cameras and GPS navigation units
Q & A
- What is the input voltage range of the ADP2108AUJZ-1.3-R7?
The input voltage range is from 2.3 V to 5.5 V.
- What is the maximum load current of the ADP2108AUJZ-1.3-R7?
The maximum load current is 600 mA.
- What is the switching frequency of the ADP2108AUJZ-1.3-R7?
The switching frequency is 3 MHz.
- What are the available output voltages for the ADP2108 series?
The ADP2108 series is available in fixed output voltages of 3.3 V, 3.0 V, 2.5 V, 2.3 V, 1.82 V, 1.8 V, 1.5 V, 1.3 V, 1.2 V, 1.1 V, and 1.0 V.
- What packages are available for the ADP2108AUJZ-1.3-R7?
The device is available in 5-ball WLCSP and 5-lead TSOT packages.
- Does the ADP2108AUJZ-1.3-R7 have an internal power switch and synchronous rectifier?
- What is the quiescent current of the ADP2108AUJZ-1.3-R7?
The typical quiescent current is 18 μA.
- Does the ADP2108AUJZ-1.3-R7 have a power save mode?
- What is the operating temperature range of the ADP2108AUJZ-1.3-R7?
The operating temperature range is -40°C to 125°C (TA).
- Is the ADP2108AUJZ-1.3-R7 RoHS compliant?
