General Description
The RT9247 is a multi-phase buck DC/DC controller integrated with all control functions for GHz CPU VRM. The RT9247 controls 2 or 3 buck switching stages operating in interleaved phase set automatically. The multi-phase architecture provides high output current while maintaining low power dissipation on power devices and low stress on input and output capacitors. The high equivalent operating frequency also reduces the component dimension and the output voltage ripple in load transient.
RT9247 controls both voltage and current loops to achieve good regulation, response & power stage thermal balance. Precise current loop using RDS(ON) as sense component builds precise load line for strict VRM DC & transient specification and also ensures thermal balance of different power stages. The settings of current sense, droop tuning, VCORE initial offset and over current protection are independent to compensation circuit of voltage loop. The feature greatly facilitates the flexibility of CPU power supply design and tuning.
The DAC output of RT9247 supports VRD10 by 6-bit VID input, precise initial value & smooth VCORE transient at VID jump. The IC monitors the VCORE voltage for PGOOD and over-voltage protection. Soft-start, over-current protection and programmable under-voltage lockout are also provided to assure the safety of microprocessor and power system.

Features
*Multi-Phase Power Conversion with Automatic Phase Selection
*VRD10 DAC Output with Active Droop Compensation for Fast Load Transient
*Smooth VCORE Transition at VID Jump
*Power Stage Thermal Balance by RDS(ON) Current Sense
*Hiccup Mode Over-Current Protection
*Programmable Switching Frequency (50kHz to 400kHz per Phase), Under-Voltage Lockout and Soft-Start
*High Ripple Frequency Times Channel Number
*RoHS Compliant and 100% Lead (Pb)-Free

Applications
*Intel® Processors Voltage Regulator: VRD10
*Low Output Voltage, High Current DC-DC Converters
*Voltage Regulator Modules

RT9247PC, RT9247GC

Description
The HA16341NT/FP and the HA16342NT/FP are switching regulator control ICs for the off-line converters of redundant power supplies.
The HA16342NT/FP is reverse current detection less version of the HA16341NT/FP.
The HA16341NT/FP have the functions of current sharing and hot swap control for redundancy. These functions enable high efficiency and high reliability for switching power supplies.
Combination the HA16341 with the HA16141 is suitable for the redundant AC to DC converters.

Features
*Secondary-side synchronous rectification control
*Main switching controller
*Dead-time adjustment for synchronous rectification MOS
*Current share function with line resistance compensation
*Hot swap power MOS FET control
*Remote on/off function, FAIL output function
*Synchronized switching with primary side
*Soft start function
*Maximum duty adjustment
*Overcurrent limiting, overcurrent shutdown functions
*Reverse current detection (only the HA16341NT/FP)
*Light load detection
*OVP function
*VCC pin UVL function

HA16342NT, HA16341FP, HA16342FP

Description
The HV-2405E is a single chip off line power supply that converts world wide AC line voltages to a regulated DC voltage. The output voltage is adjustable from 5VDC to 24VDC with an output current of up to 50mA. The HV-2405E can operate from input voltages between 15Vrms and 275Vrms as well as input frequencies between 47Hz to 200Hz (see Table 1 in section titled “Minimum Input Voltage vs Output Current” for details).
The wide input voltage range makes the HV-2405E an excellent choice for use in equipment which is required to operate from either 240V or 120V. Unlike competitive AC-DC convertors, the HV-2405E can use the same external components for operation from either voltage. This flexibility in input voltage, as well as frequency, enables a single design for a world wide supply.
The HV-2405E has a safety feature that monitors the incoming AC line for large dv/dt (i.e. random noise spikes on AC line, initial power applied at or near peak line voltage). This inhibit function protects the HV-2405E, and subsequent circuitry, by turning off the HV-2405E during large dv/dt transients. This feature is utilized to ensure operation within the SOA (Safe Operating Area) of the HV-2405E.
The HV-2405E can be configured to work directly from an electrical outlet (see Figure 1) or imbedded in a larger system (see Figure 7). Both application circuits have components that will vary based on input voltage, output current and output voltage. It is important to understand these values prior to beginning your design.

Features
*Direct AC to DC Conversion
*Wide Input Voltage Range. . . . . . . . . .15Vrms-275Vrms
*Dual Output Voltages Available
*Output Current . . . . . . . . . . . . . . . . . . . . . . . up to 50mA
*Output Voltage . . . . . . . . . . . . . . . . . . . . . . . . . 5V to 24V
*Line and Load Regulation. . . . . . . . . . . . . . . . . . . . <2%
*UL Recognition, File # E130808

Applications
*Power Supply for Non-Isolated Applications
*Power Supply for Relay Control
*Dual Output Supply for OFF-LINE Motor Controls
*Housekeeping Supply for Switch-Mode Power Supplies

HV3-2405E-5, HV3-2405E-9

Description
The 34716 is a highly integrated, space-efficient, low cost, dual synchronous buck switching regulator with integrated N-channel power MOSFETs. It is a high performance point-of-load (PoL) power supply with its second output having the ability to track an external reference voltage. it provides a full power supply solution for Double-Data-Rate (DDR) Memories.
Channel one provides a source only, 5.0 A drive capability, while channel two can sink and source up to 3.0 A. Both channels are highly efficient with tight output regulation. With its high current drive capability, channel one can be used to supply the VDDQ to the memory chipset. The second channel’s ability to track a reference voltage makes it ideal to provide the termination voltage (VTT) for modern data buses. The 34716 also provides a buffered output reference voltage (VREFOUT) to the memory chipset The 34716 offers the designer the flexibility of many control, supervisory, and protection functions to allow for easy implementation of complex designs. It is housed in a Pb-free, thermally enhanced, and space efficient 26-Pin Exposed Pad QFN.

Features
*50 mΩ integrated N-channel power MOSFETs
*Input voltage operating range from 3.0 to 6.0 V
*±1% accurate output voltages, ranging from 0.7 to 3.6 V
*The second output tracks 1/2 an external reference voltage
*±1% accurate buffered reference output voltage
*Programmable switching frequency range from 200 kHz to 1.0 MHz
*Programmable soft start timing for channel one
*Over-current limit and short-circuit protection on both channels
*Thermal shutdown
*Output over-voltage and under-voltage detection
*Active low power good output signal
*Active low standby and shutdown inputs
*Pb-free packaging designated by suffix code EP.

MC34716EP/R2

DESCRIPTION
AIC1533, composed of dual charge pumps and a regulator, provide three independent regulated
voltages designed for using in thin-film transistor (TFT) liquid crystal display (LCD).
The main regulator has an adjustable output voltage and a low dropout voltage of 500mV at
300mA load current is performed.
The dual charge pumps independently regulate a positive output and a negative output. AIC1533
has thermal shutdown capability and survives a continuous short circuit from output to ground.
A unique control scheme minimizes output ripple as well as output capacitance for both charge pump.
1MHz-switching frequency of AIC1533 provides a low noise, low cost total solution.
The device operates up to 15V supply voltage and is available in 14-lead SOP and 16-lead TSSOP package.

FEATURES
* One Low Dropout Linear Regulator Dropout Voltage 500mV at 0.3A Output Current
* Dual Adjustable Charge Pump Up to +30V Positive Output Down to -10V Negative Output
* Power Up Sequencing and Adjustable Delay time
* Power-Saving Shutdown Mode (0.1μA typical)
* Operating Supply Voltage: 12V
* 1MHz Operation Frequency
* Internal Current Limit and Thermal Protection built in LDO part
* Few External Components Required

APPLICATIONS
* LCD Monitor Panel Module
* LCD TV Panel Module