|Category||Power Management => Regulators => Switching Regulators|
|Description||Control Method = Pwm, Pwm/pfm ;; Operation Start Voltage = 0.9 V ;; Output Voltage = 2.5-6.0V ;; Output Accuracy = ±2.0% ;; Switching Frequency = 300, 600 KHZ ;; Current Consumption Operating = 350 µA (3.3V, 600KHz) ;; Current Consumption Shutdown = 3.0 µA Max. ;; Efficiency Typ. = 87% (Vout=5V) ;; Package = 8-pin Tssop|
|Datasheet||Download S-8340 datasheet
PWM Control & PWM/PFM Control S-8340/8341 Series High-Frequency Step-Up Switching Regulator-Controllers
The S-8340/8341 Series consists of CMOS step-up switching regulatorcontrollers with PWM control (S-8340) and PWM/PFM switched control (S8341). These devices contain a reference voltage source, oscillation circuit, error amplifier, phase compensation circuit, PWM control circuit, and other components. Since the oscillation frequency is a high 300 kHz or 600 kHz, with the addition of a small external component, the ICs can function as step-up switching regulators with high efficiency and large output current. The speed of the output stage is enhanced so that the Nch power MOS with a low ON resistance can be switched quickly. The S-8340 provides low-ripple power, high-efficiency, and excellent transient characteristics thanks to a PMW control circuit capable of varying the duty ratio linearly from 82 % and optimized error amplifier, and phase compensation circuit. The S-8341 contains a PWM/PFM switching control circuit so that it operates using PWM control with a duty ratio % or higher and using PFM control with a duty ratio of lower than % to ensure high efficiency in all load ranges. These ICs serve as ideal main power supply units for portable devices when coupled with the 8-Pin TSSOP package and high oscillation frequencies.Features
Oscillation frequency: 600 kHz & B Series), 300 kHz & D Series). Output voltage: Internally selectable in the range V in steps 0.1 V (Output voltage fixed output type) Output voltage precision: ±2.0 Output voltage external setting (FB) type available. FB terminal voltage (VFB) 1.0 V The only peripheral components that can be used with this IC are a transistor, a coil, a diode, capacitors (3), and a resistor. Duty ratio: 82 % typ. PWM control 82 % typ. PWM/PFM-switched control & B Series) 82 % typ. PWM/PFM-switched control & D Series) Low-voltage operation: Oscillation can start when VDD=0.9 V. Built-in current limiting circuit: Can be set with an external resistor (RSENSE). Soft-start function: Can be set with an external capacitor (CSS). With a power-off function.Applications
Power supplies for PDAs, electronic notebooks, and portable devices. Power supplies for audio equipment, including portable CD players, portable MD players and headphone stereo equipment. Main and sub power supplies for notebook computers and peripheral equipment. Fixed voltage power supply for cameras, video equipment and communications equipment.
PWM Control & PWM/PFM Control High-Frequency Step-Up Switching Regulator-Controllers S-8340/8341 Series Rev.2.1_60 Block DiagramTriangular wave oscillation circuit PWM comparator Phase compensation circuit
Figure 1 Block diagram <Output voltage fixed output type>
Figure 2 Block diagram <Output voltage external setting type>
PWM Control & PWM/PFM Control High-Frequency Step-Up Switching Regulator-Controllers Rev.2.1_60 S-8340/8341 Series Selection Guide
Taping specifications Package type Output voltage × 10 A;Output voltage fixed output type, fosc=600 kHz B;Output voltage external setting type, fosc=600 kHz C;Output voltage fixed output type, fosc=300 kHz D;Output voltage external setting type, fosc=300 kHz 0; PWM control 1; PWM/PFM-switched control
2. Product List 2-1. Output voltage fixed output type Item Output Voltage (V) % S-8340AXXAFT Series fosc = 600 kHz PWM control S-8340A60AFT-T2 S-8341AXXAFT Series fosc = 600 kHz PWM/PFM-switched control AFT-T2 S-8340CXXAFT Series fosc = 300 kHz PWM control S-8340C60AFT-T2 S-8341CXXAFT Series fosc = 300 kHz PWM/PFM-switched control S-8341C50 AFT-T2For the availability of other output voltage product, contact the SII Sales Department.
2.2. Output voltage external setting type S-8340D00AFT-T2 S-8341D00AFT-T2 fosc = 600 kHz, PWM control fosc = 600 kHz, PWM/PFM-switched control fosc = 300 kHz, PWM control fosc = 300 kHz, PWM/PFM-switched control
|Related products with the same datasheet|
|Some Part number from the same manufacture Seiko Instruments|
|S-8340A25AFT Control Method = Pwm, Pwm/pfm ;; Operation Start Voltage = 0.9 V ;; Output Voltage = 2.5-6.0V ;; Output Accuracy = ±2.0% ;; Switching Frequency = 300, 600 KHZ ;; Current Consumption Operating = 350 µA|
|S-8351 Control Method = PFM ;; Operation Start Voltage = 0.9 V ;; Output Voltage = 2.0-6.5V (A, B, C) 1.5-6V (D) ;; Output Accuracy = ±2.4% ;; Switching Frequency = 100 KHZ ;; Current Consumption Operating|
|S-8353 Control Method = Pwm, Pwm/pfm ;; Operation Start Voltage = 0.9V ;; Output Voltage = 1.5-6.5V (Vdd/Vout Sep.) 2.0-6.5V (the Others) ;; Output Accuracy = ±2.4% ;; Switching Frequency = 30, 50, 250 KHZ ;; Current|
S-75L04ANC : Propagation Delay Time NAND Gate (CL=15pF) = 7.0 NS (Vcc=3V) ;; Operating Voltage = 1 to 3.6 V ;; Operating Temperature = -40 to +85°C ;; Output Current Ioh = -1 ma Min. (Vcc=1.5V) ;; Output Current Iol = 1 ma Min. (Vcc=1.5V) ;; Package = SC-88A
S-1702BDC01 : The S-1702 Series, Developed Based On CMOS Technology, Is A 150 MA Output Positive Voltage Regulator With A Low Dropout Voltage, A High-accuracy Output Voltage, And Low Current Consumption. The S-1702 Series Includes A Voltage Regulator With High-accuracy Output Voltage Of ±1.0% Allowing To Use A C
S-80154ALPF-JBFTFG : ULTRA-SMALL PACKAGE HIGH-PRECISION VOLTAGE DETECTOR WITH DELAY CIRCUIT (INTERNAL DELAY TIME SETTING) The S-801 Series is a series of high-precision voltage detectors with a built-in delay time generator of fixed time developed using CMOS process. The detection voltage is fixed internally,
S-817B41AMC-CXET2G : Super-small Package CMOS Voltage Regulator
S-80142CLMC-JI3T2G : Features = With Delay Circuit ;; Detection Voltage = 2.2 to 6.0 V ;; Accuracy = ±2% ;; Operating Voltage = 0.95 to 10 V ;; Current Consumption = 1.3 µA (Vdd=3.5V) ;; Output Form = NCH Opendrain CMOS ;; Package = SOT-23-5 4-pin SNB(B)
S-1131B28UC-N4N-TF : 1.5 V FIXED POSITIVE LDO REGULATOR, 1.05 V DROPOUT, PDSO6 Specifications: Regulator Type: Low Dropout ; Output Polarity: Positive ; Output Voltage Type: Fixed ; Package Type: Other, HALOGEN AND LEAD FREE, HSON-6 ; Life Cycle Stage: ACTIVE ; Output Voltage: 1.47 to 1.53 volts ; IOUT: 0.1000 amps ; VIN: 2 to 6.5 volts ; Dropout Voltage: 1.05 volts
S-1167B32-M5T1G : 1.5 V FIXED POSITIVE LDO REGULATOR, 0.58 V DROPOUT, PDSO6 Specifications: Regulator Type: Low Dropout ; Output Polarity: Positive ; Output Voltage Type: Fixed ; Package Type: Other, HALOGEN FREE AND LEAD FREE, SNT-6 ; Life Cycle Stage: ACTIVE ; Output Voltage: 1.48 to 1.52 volts ; IOUT: 0.0300 amps ; VIN: 2 to 6.5 volts ; Dropout Voltage: 0.5800 volts
S-1206B34-M3T1G : 1.2 V FIXED POSITIVE LDO REGULATOR, 0.81 V DROPOUT, PDSO6 Specifications: Regulator Type: Low Dropout ; Output Polarity: Positive ; Output Voltage Type: Fixed ; Package Type: Other, HALOGEN FREE AND LEAD FREE, SNT-6 ; Life Cycle Stage: ACTIVE ; Output Voltage: 1.18 to 1.22 volts ; IOUT: 0.1000 amps ; VIN: 1.7 to 6.5 volts ; Dropout Voltage: 0.8100 volts
S-1702NJJ00-I6T1G : 3.1 V FIXED POSITIVE LDO REGULATOR, 0.23 V DROPOUT, PDSO6 Specifications: Regulator Type: Low Dropout ; Output Polarity: Positive ; Output Voltage Type: Fixed ; Package Type: Other, HALOGEN FREE AND LEAD FREE, SNT-6A ; Life Cycle Stage: ACTIVE ; Output Voltage: 3.07 to 3.13 volts ; IOUT: 0.1500 amps ; VIN: 2 to 6.5 volts ; Dropout Voltage: 0.2300 volts
S-75L04ANC-5L5-T2 : LV/LV-A/LVX/H SERIES, 1-INPUT INVERT GATE, PDSO5 Specifications: Gate Type: NOT ; Supply Voltage: 1.5V ; Logic Family: CMOS ; Inputs: 1 ; Propagation Delay: 75 ns ; Operating Temperature: -40 to 85 C (-40 to 185 F) ; Pin Count: 5 ; IC Package Type: Other, PLASTIC, SC-88A, 5 PIN
S-817A56APF-CVTTFG : 5 V FIXED POSITIVE LDO REGULATOR, 0.25 V DROPOUT, PDSO4 Specifications: Regulator Type: Low Dropout ; Output Polarity: Positive ; Output Voltage Type: Fixed ; Package Type: Other, HALOGEN AND LEAD FREE, SC-82AB, 4 PIN ; Life Cycle Stage: ACTIVE ; Output Voltage: 4.9 to 5.1 volts ; VIN: 6 to 10 volts ; Dropout Voltage: 0.2500 volts
30L6P45 : Rectifier Module Silicon Diffused Type ( Three Phase Full Wave Bridge Applications ).
AP1307 : Two Coil Fan Predriver.
BQ2002DSN : ti BQ2002D, Nicd/nimh Gating Charge Management ic With Dt/dt Termination.
CG3040-7 : 25 Watt DC-DC Converters. Input voltage ranges DC 3 outputs V DC I/O electric strength test voltage Flex power Serial 8-bit status communication port Adapted to MIL and avionics applications Input voltage Reverse polarity protection BG CG shunt diode Output voltage setting accuracy Minimum load Line/load regulation Line regulation Load regulation Output voltage switching noise.
LM2660 : Switched Capacitor Converters. LM2660 - Switched Capacitor Voltage Converter, Package: Soic Narrow, Pin Nb=8.
LND48-adj : Low Dropoutvoltage Regulator , LDO of 420mV @ 400mA. This series of fixed-voltage monolithic micropower voltage regulators is designed for a wide range of applications. This device is an excellent choice for use in battery-powered application. Furthermore, the quiescent current increases only slightly at dropout, which prolongs battery life. This series of fixed-voltage regulators very low quiescent current(100mA.
MAX1744 : High-Voltage, Step-down DC-DC Controller in Max. The MAX1744/MAX1745 are step-down DC-DC controllers capable of handling to 36V inputs. These parts use a proprietary current-limited control scheme for excellent light- and full-load efficiency, while their 330kHz (max) switching frequency permits small external components for space-critical applications. Operation to 100% duty cycle permits the lowest.
SPX1086 : 1.5a Low Dropout Voltage Regulator Adjustable & Fixed Output, Fast Response.
TPS76928QDBVRQ1 : ti TPS76928-Q1, Automotive Catalog Ultralow-power 100-mA Low-dropout Linear Regulators.
UCC2807D-2 : Current Mode. ti UCC2807-2, Programmable Maximum Duty Cycle PWM Controller.
DS16EV5110 : The DS16EV5110 is a 2.25 Gbps multi-channel equalizer optimized for video cable extension applications. It contains three transition-minimized differential signaling (TMDS) data channels and one clock channel as commonly found in DVI and HDMI cables. It provides compensation for skin-effect and dielectric losses, a common phenomenon when transmitting.
IR3507MPBF : The IR3507 Phase IC Combined With An IR XPhase3 Control IC Provides A Full Featured And Flexible Way To Implement Power Solutions For The Latest High Performance CPUs And ASICs. * Power State Indicator (PSI) interface provides the capability to maximize the efficiency at light loads. * 7V/2A gate drivers (4A GATEL sink current) * Converter output voltage.
BQ24072 : USB-Friendly Li-Ion Battery Charger And Power-Path Management IC, Vout 200mV Above Vba The bq2407x series of devices are highly integrated Li-ion linear chargers and system power path management devices targeted at space-limited portable applications. The devices operate from either a USB port or AC adapter. The high input voltage range with input overvoltage.
TPS78230 : 150mA, Ultra-Low Quiescent Current, Iq 1uA, Low-Dropout Linear The TPS782 family of low-dropout regulators (LDOs) offers the benefits of ultra-low power (IQ = 1µA), and miniaturized packaging (2×2 SON). This LDO is designed specifically for battery-powered applications where ultra-low quiescent current is a critical parameter. The TPS782, with ultra-low.
TPS53310 : 3-A Step-Down Regulator With Integrated Switcher The TPS53310 provides a fully integrated 3-V to 5-V VIN integrated synchronous FET converter solution with 16 total components, in 200 mm2 of PCB area. Due to the low RDS(on) and TI\'s proprietary SmoothPWM&153; Skip mode of operation, it enables 95.5% peak efficiency, and over 90% efficiency at loads.