APL5333 Datasheet, PDF (1/16 Pages) Anpec Electronics Coropration – 3A Bus Termination Regulator

APL5333
3A Bus Termination Regulator
Features
• Sourcing and Sinking Current up to 3A
• Wide Input Voltage Range: 1.2V to 3.6V
• VTT and VTTREF Voltage Tracks at Half the
VREF Voltage
• VTT and VTTREF Voltage with ±20mV Accuracy
• Excellent Load Transient Response
- Droop Compensation
- Fast Loop Response
• Stable with 20µF Ceramic Output Capacitors
• Current Limit Protection
• Thermal Shutdown Protection
• Power-On-Reset Function on VCNTL
• S3, S5 Input Signals for ACPI States
• Available in a Thermal Enhanced MSOP-10P
Package
• Lead Free Available (RoHS Compliant)
Applications
• DDR 1/2/3 Memory Termination
• SSTL-2, STL-18 and HSTL Termination
General Description
The APL5333 linear regulator is designed to provide a
regulated voltage with bi-directional output current for
DDR-SDRAM termination. The APL5333 integrates two
power transistors to source or sink current up to 3A. It
also incorporate current-limit, thermal shutdown into a
single chip.
The output voltage of APL5333 tracks the voltage at VREF
pin. An internal resistor divider is used to provide a half
voltage of VREF for VTTREF and VTT Voltage. The VTT
output voltage is only requiring 20µF 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 are both pulled low the device provides the soft-off for
VTT and VTTREF. The MSOP-10P package with a copper
pad is available which provides excellent thermal
impedance.
Simplified Application Circuit
V_IN
V_CNTL
APL5333
1 _VREF
10
VCNTL
5V
2 _VIN
S5 ⁹
V_TT
3 _VTT
GND ⁸
4
PGND
S3 ⁷
5 _VTTSNS
6
VTTREF
Ordering and Marking Information
APL5333
Lead Free Code
Handling Code
Temperature Range
Package Code
Package Code
XA : MSOP-10P
Temperature Range
I : - 40 to 85 ^oC
Handling Code
TR : Tape & Reel
Lead Free Code
L : Lead Free Device
APL5333 XA :
L5333
XXX
XX
X - Date Code
Note: ANPEC lead-free products contain molding compounds/die attach materials and 100% matte in plate termination finish; which are fully compliant
with RoHS and compatible with both SnPb and lead-free soldering operations. ANPEC lead-free products meet or exceed the lead-free requirements of
IPC/JEDEC J STD-020C for MSL classification at lead-free peak reflow temperature.
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.1 - Feb., 2008
www.anpec.com.tw