ETA8121
ETA8121 is Forced PWM Synchronous Step-Down Converter manufactured by ETA.
DESCRIPTION
ETA8121 is a wide input range, high-efficiency and high frequency DC-to-DC step-down switching regulator, capable of delivering up to 2A of output current. With a fixed switching frequency of 1MHz, this current mode PWM controlled converter allows the use of small external ponents, such as ceramic input and output caps, as well as small inductors. ETA8121 also employs a forced PWM control scheme, thereby ensuring the minimum ripple voltage. Its input can withstand a voltage surge as high as 24V, making it an ideal solution for industrial applications such as Surveillance Camera, LCD TV, Set Top Box, etc.
ETA8121 is available in SOT23-6 package.
FEATURES
- Wide Input Range: 4.2V-18V
- Forced PWM Control
- 1MHz Switching Frequency
- Capable of Delivering 2A Current
- No External pensation Needed
- Current Mode Control
- Thermal Shutdown and UVLO
- Excellent Load and Line Transient Response
- Available in SOT23-6 Package
- Ro HS pliant
- Moisture Sensitivity Level 3
APPLICATIONS
- Surveillance Camera
- Set Top Box
- LCD TV
TYPICAL APPLICATION
VIN 4.7u F
10n F
5 IN
SW 6
4 EN
FB 3
L: Vout V,2.2u H L u H; Vout＜3.3V,L=2.2u H
L optional
VOUT
Ru
Cff-
22u Fx2 Rd-
- ORDERING INFORMATION
Vout
=
Ru+Rd Rd x0.8V,
Rd is remended to be less...
