APL5338A Datasheet, PDF (1/21 Pages) Anpec Electronics Coropration – 2A Bus Termination Regulator

APL5338A
2A Bus Termination Regulator
Features
General Description
• Sourcing and Sinking Current up to 2A
The APL5338A linear regulator is designed to provide a
• VCNTL Supply Voltage Range: 3.1V to 5.5V
regulated voltage with bi-directional output current for
• VIN Supply Voltage Range: 1.2V to 3.6V
DDR-SDRAM termination. The APL5338A integrates two
power transistors to source or sink current up to 2A. It
• VTT and VTTREF Voltage Tracks at Half the VREF _{also incorporates current-limit and thermal shutdown into}
Voltage
a single chip.
• VTT and VTTREF Voltage with ±10mV Accuracy _{The output voltage of APL5338A tracks the voltage at VREF}
• Excellent Load Transient Response
pin. An internal resistor divider is used to provide a half
• Stable with 10µF Ceramic Output Capacitor
• Current-Limit Protection
• Thermal Shutdown Protection
• Power-On-Reset Function on VCNTL
voltage of VREF for VTTREF and VTT Voltage. The VTT
output voltage is only requiring 10µF of ceramic output
capacitance for stability and fast transient response. The
S3 and S5 pins provide the sleep state for VTT (S3 state)
and suspend state (S4/S5 state) for device when S5 and
• S3, S5 Input Signals for ACPI States
S3 are both pulled low the device provides the soft-off for
• Small MSOP-10P, DFN2x2-8 and TDFN3x3-10 ^{VTT and VTTREF. The MSOP-10P, DFN2x2-8 and}
Packages
TDFN3x3-10 packages with a copper pad is available
• Lead Free and Green Devices Available
which provides excellent thermal impedance.
(RoHS Compliant)
Simplified Application Circuit
CIN
10µF
COUT
10µF
APL5338A
1
VREF
2 _VIN
10
VCNTL
S5 ⁹
3
VTT
GND ⁸
4
PGND
S3 ⁷
5 _{VTTSNS VTTREF} 6
C1
0.1µF
Applications
• DDR 2/3 Memory Termination
ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and
advise customers to obtain the latest version of relevant information to verify before placing orders.
Copyright © ANPEC Electronics Corp.
1
Rev. A.2 - Aug., 2013
www.anpec.com.tw