EML3380
EML3380 is Synchronous Step-Down Regulator manufactured by Elite Semiconductor Microelectronics Technology.
Description
EML3380 is a high efficiency step down DC/DC converter. It features an extremely low quiescent current, which is suitable for reducing standby power consumption, especially for portable applications.
The device can accept input voltage from 2.6V to 5.5V and deliver up to 1A output current. High 1.5MHz switching frequency allows the use of small surface mount inductors and capacitors to reduce overall PCB board space. Furthermore, the built-in synchronous switch improves efficiency and eliminates external Schottky diode. EML3380 uses different modulation modes for various loading conditions: (1) Pulse Width Modulation (PWM) for low output voltage ripple and fixed frequency noise, (2) Pulse Frequency Modulation (PSM) for improving light load efficiency.
Features
- Approach 95% efficiency
- Input voltage : 2.6V to 5.5V
- Output current up to 1A
- Reference voltage: 0.6V
- Quiescent current 30μA
- Internal switching frequency: 1.5MHz
- No Schottky diode needed
- Low dropout operation: 100% duty cycle
- Shutdown current < 1μA
- Excellent line and load transient response
- Over-current protection
- Over-temperature protection
Applications
- Blue-Tooth devices
- Cellular and Smart Phones
- Wireless networking
- Portable applications
In addition EML3380 also build in over current and over voltage protection. The adjustable version of this device is available in both of SOT-23-5L and TDFN-6L packages.
Typical Application
VIN 2.6V to 5.5V
CIN 4.7u F
ON OFF
L1 2.2u H
CFF 22p F
R1
450KΩ
COUT 10u F
VOUT 3.3V, 1A
R2
100KΩ
Fig.1 Typical Application
Elite Semiconductor Microelectronics Technology Inc.
Publication Date: Jul. 2020
Revision:...
