SC4612HEVB SEMTECH [Semtech Corporation], SC4612HEVB Datasheet
SC4612HEVB
Related parts for SC4612HEVB
SC4612HEVB Summary of contents
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POWER MANAGEMENT Description SC4612H is a high performance synchronous buck controller that can be configured for a wide range of applications. The SC4612H utilizes synchronous rectified buck topology where high efficiency is the primary consideration. SC4612H can be used over ...
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POWER MANAGEMENT Absolute Maximum Ratings Exceeding the specifications below may result in permanent damage to the device, or device malfunction. Operation outside of the parameters specified in the Electrical Characteristics section is not implied. Parameter Bias Supply Voltage to GND ...
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POWER MANAGEMENT Electrical Characteristics Unless otherwise specified: VIN = VDD = 12V 600kHz OSC A Parameter Bias Supply Quiescent Current VDD Undervoltage Lockout Start Threshold UVLO Hysteresis Drive Regulator DRV Load Regulation Oscillator Operation Frequency ...
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POWER MANAGEMENT Electrical Characteristics (Cont.) Unless otherwise specified: VIN = VDD = 12V 600kHz OSC A Parameter SS/EN Disable Threshold Voltage Soft Start Charge Current (1) Soft Start Discharge Current (1) Disable Low to Shut ...
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... Date Code (Example: 0012) xxxxx = Semtech Lot No. (Example:E9010) 2008 Semtech Corp. Ordering Information Part Number SC4612HMLTRT MLPD- PHASE SC4612HSTRT 11 DH SC4612HEVB 10 BST Notes: 9 DRV (1) When ordering please specify MLPD or SOIC 8 DL package. 7 GND (2) Only available in tape and reel packaging. A reel contains 3000 devices for MLPD package and 2500 for SOIC package ...
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POWER MANAGEMENT Pin Descriptions Pin # Pin# Pin Name MLPD SOIC ILIM 2 3 OSC 3 4 SS/ EAO VDD 7 9 GND ...
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POWER MANAGEMENT Block Diagram 830mV OSC DRV DRV VDD VDD DRV REG & BG VREF VREF VSS FB OC DETECT ILIM OC SOFTSTART SSDN SSLO SSINT SS/EN SS SSHI 2008 Semtech Corp. CO_INT ...
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POWER MANAGEMENT Typical Characteristics Typical Soft Start Current vs Temperature - Temperature ( Typical DRV Voltage vs Load Current IDRV (mA) Typical VFB vs Temperature 503 ...
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POWER MANAGEMENT Typical Characteristics (Cont.) Typical VDD Quiescent current vs Temperature - Temperature ( Start Up from VOUT = 2.5V Short Circuit Applied 2008 Semtech Corp. VDD=42V VDD=12V 100 150 O C) ...
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POWER MANAGEMENT Applications Information INTRODUCTION The SC4612H is a versatile voltage mode synchronous rectified buck PWM convertor, with an input supply (VIN) ranging from 4.5V to 40V designed to control and drive N-channel MOSFETs. The power dissipation is controlled by ...
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POWER MANAGEMENT Applications Information (Cont.) Under Voltage Lock Out Under Voltage Lock Out (UVLO) circuitry senses the VDD through a voltage divider. If this signal falls below 4.5V (typical) with a 400mV hysteresis (typical), the output driv- ers are disabled. ...
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POWER MANAGEMENT Applications Information (Cont.) The design guidelines are as following: 1. Set the loop gain crossover frequency w switching frequency. 2. Place an integrator at the origin to increase DC and low frequency gains. 3. Select w and w ...
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POWER MANAGEMENT Application Information (Cont.) COMPONENT SELECTION: SWITCHING SECTION OUTPUT CAPACITORS - Selection begins with the most critical component. Because of fast transient load current requirements in modern microprocessor core supplies, the output capacitors must supply all transient load current ...
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POWER MANAGEMENT Application Information (Cont.) that the stored charge on the bottom FET body diode will be moved through the top FET as it starts to turn on. The resulting power dissipation in the top FET will be ...
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POWER MANAGEMENT Application Information (Cont.) Application Circuit 1: Vin = 24V; Vout = 3.3V @ 20A, Fsw = 500kHz adj SC4612MLP 1 ILIM C 1 200p 2 OSC SS/ ...
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POWER MANAGEMENT Application Information (Cont.) Application Circuit 2: Vin = 12V; Vout = 3.3V @ 10A, Fsw = 1MHz R 1 adj 1 ILIM C 1 82p 2 OSC SS/ 2.7n ...
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POWER MANAGEMENT Application Information (Cont.) Application Circuit 3: Vin = 5V; Vout = 1.25V @ 12A, Fsw = 1MHz adj SC4612MLP 1 ILIM C 1 82p 2 OSC SS/ ...
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POWER MANAGEMENT Application Information (Cont.) Evaluation Board: 2008 Semtech Corp. Top layer and components view Bottom Layer: 18 SC4612H www.semtech.com ...
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POWER MANAGEMENT PCB Layout Guidelines Careful attention to layout is necessary for successful implementation of the SC4612H PWM controller. High switching currents are present in the application and their effect on ground plane voltage differentials must be understood and minimized. ...
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POWER MANAGEMENT Outline Drawing - MLPD - 12 PIN1 INDICATOR (LASER MARK) A aaa C NOTES: 1. CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES). 2. COPLANARITY APPLIES TO THE EXPOSED PAD AS WELL AS THE TERMINALS. Land Pattern - ...
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POWER MANAGEMENT Outline Drawing - SOIC - N/2 TIPS aaa C SEATING PLANE NOTES: 1. CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES). 2. DATUMS 3. DIMENSIONS "E1" AND "D" DO NOT INCLUDE MOLD FLASH, PROTRUSIONS OR ...