中文
EnglishThe APL5333 integrates two power transistors to source or sink current up to 3A. It also incorporate current-limit, thermal shutdown into a single chip.
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)
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
相关文件
Part_No | Package & Pins | Input Voltage (V) | VCNTL Voltage (V) | Quiescent Current (typ)(uA) | Output Sink Current (max)(A) | Output Source Current (max)(A) | DDR Power | VTTREF | S3/S5 | ||
min | max | min | max | ||||||||
APL5331 | SOP-8 | 1.2 | 3.5 | 3.1 | 6 | 3900 | 3 | 3 | DDR1 | N | N |
APL5333 | MSOP-10 | 1.2 | 3.6 | 4.5 | 5.5 | 2000 | 3 | 3 | DDR1 | Y | Y |
APL5338 | MSOP-10 | 1.2 | 3.6 | 4.5 | 5.5 | 600 | 2 | 2 | DDR2 | Y | Y |
APL5338A | MSOP-10 | 1.2 | 3.6 | 3.1 | 5.5 | 600 | 2 | 2 | DDR2 | Y | Y |
APL5337 | SOP-8 | 1.1 | 4.5 | 3 | 5.5 | 1000 | 2 | 2 | DDR2 | N | N |
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