ST730 ,PHASE CONTROL THYRISTORS Hockey Puk VersionAbsolute Maximum Ratings are those values beyond which damage to the device may occur. Functional o ..
ST730ACD ,5V STEP-DOWN CURRENT MODE PWM DC-DC CONVERTERSAbsolute Maximum Ratings are those values beyond which damage to the device may occur. Functional o ..
ST735 ,-5V INVERTING, NEGATIVE OUTPUT CURRENT-MODE PWM REGULATORAbsolute Maximum Ratings are those values beyond which damage to the device may occur. Functional o ..
ST735CD ,-5V INVERTING NEGATIVE OUTPUT CURRENT MODE PWM REGULATORABSOLUTE MAXIMUM RATINGSSymbol Parameter Value UnitV DC Input Voltage (V to GND)-0.3 to +7 VIN INSh ..
ST735CD-TR ,-5V INVERTING NEGATIVE OUTPUT CURRENT MODE PWM REGULATORST735-5V INVERTING, NEGATIVE OUTPUTCURRENT-MODE PWM REGULATOR■ CONVERTS +4.0V TO + 6.2V INPUT TO -5 ..
ST735S ,300kHz, -5V/ADJ INVERTING, NEGATIVE OUTPUT CURRENT-MODE PWM REGULATORELECTRICAL CHARACTERISTICS OF ST735S (Refer to test circuit, V =5V, C =4.7μF, C =10μFIN IN OUTall X ..
STR731FV0T7 ,32-BIT ARM7 FLASH MICROCONTROLLER WITH 3x CAN, 4 UARTs, 20 TIMERS, ADC, 12 COMM. INTERFACESAbsolute maximum ratings . . . . 224.3 Operating conditions 244.3.1 Supply current charac ..
STR731FV2T6 ,32-BIT ARM7 FLASH MICROCONTROLLER WITH 3x CAN, 4 UARTs, 20 TIMERS, ADC, 12 COMM. INTERFACESblock diagram of the device family.4/52 STR73xFxx Overview2 Overview Table 2. Product ove ..
STR731FV2T7 ,32-BIT ARM7 FLASH MICROCONTROLLER WITH 3x CAN, 4 UARTs, 20 TIMERS, ADC, 12 COMM. INTERFACESSTR73xFxxARM7TDMI™ 32-bit MCU with Flash, 3x CAN,4 UARTs, 20 timers, ADC, 12 comm. interfaces
STR735FZ2T7 ,32-BIT ARM7 FLASH MICROCONTROLLER WITH 3x CAN, 4 UARTs, 20 TIMERS, ADC, 12 COMM. INTERFACESFeatures STR730FZx STR735FZx STR731FVx STR736FVxFlash memory - bytes 128K 256K 128K 256K 64K 128K 2 ..
STR736FV1T6 ,32-BIT ARM7 FLASH MICROCONTROLLER WITH 3x CAN, 4 UARTs, 20 TIMERS, ADC, 12 COMM. INTERFACESFeatures■ Core– ARM7TDMI 32-bit RISC CPUTQFP100 14 x 14– 32 MIPS @ 36 MHz■ MemoriesTQFP14420 x 20– ..
STR736FV1T7 ,32-BIT ARM7 FLASH MICROCONTROLLER WITH 3x CAN, 4 UARTs, 20 TIMERS, ADC, 12 COMM. INTERFACESThermal characteristics . . . . . . 482/52 STR73xFxx Contents6 Order codes . . . . . . ..
ST730
5V STEP-DOWN, CURRENT-MODE PWM DC-DC CONVERTERS
1/9January 2003 UPTO 450mA LOAD CURRENTS 200kHz HIGH-FREQUENCY
CURRENT-MODE PWM 85%TO 96% EFFICIENCIES 33μHOR100μH PRE-SELECTED
INDUCTOR VALUE,NO COMPONENT
DESIGN REQUIRED 0.8mA QUIESCENT CURRENT 0.3μA SHUTDOWN SUPPLY CURRENT ADJUSTABLE OUTPUT VOLTAGE OVERCURRENT, SOFT-START AND
UNDERVOLTAGE LOCKOUT PROTECTION CYCLE-BY-CYCLE CURRENT LIMITING PACKAGE AVAILABLE: DIP-8 AND SO-8
DESCRIPTIONThe ST730Aisa5V output CMOS, step-down
switching regulator. The ST730A accepts inputs
between 5.2V and 11V and delivers 450mA.
Typical efficienciesare 85%to 96%.
Quiescent supply currentis 0.8mA and only 0.3μA shutdown mode. The output does not exhibit
frequency over this specified range. Pulse-width
modulation (PWM) current-mode control provides
precise output regulation and excellent transient
responses. Output voltage accuracy is
guaranteedto be ±5% over line, load, and
temperature varations.
Fixed-frequency switching and absence of
subharmonic ruipple allows easy filteringof output
ripple and noise,as wellas the useof small
external components. This regulators require only single inductor value to workin most
applications,sono inductor designis necessary.
Typical applications are: Cellular phones& radios,
portable Instruments, Portable Communications
Equipments and Computer Peripherals.
ST730A STEP-DOWN,
CURRENT-MODE PWM DC-DC CONVERTERS
SCHEMATIC DIAGRAM
ST730A2/9
ABSOLUTE MAXIMUM RATINGSAbsoluteMaximum Ratingsare those values beyond which damagetothe devicemay occur. Functional operation under these conditionis
not implied.
THERMAL DATA(*)This value dependsfrom thermal designofPCBon whichthe deviceis mounted.
ORDERING CODES
ST730A3/9
CONNECTION DIAGRAM (top view)
PIN DESCRIPTION
ST730A4/9
ELECTRICAL CHARACTERISTICS(VCC =5V,IO =0mA,TA=TMINtoTMAX ,unless otherwise specified.)
TYPICAL APPLICATION CIRCUIT
ST730A5/9
TYPICAL PERFORMANCE CHARACTERISTICS (unless otherwise specifiedTj =25°C
Figure1: Efficencyvs Output Current
Figure2: Supply Currentvs Temperature
Figure3: Oscillator Frequencyvs Temperature
Figure4: Oscillator Frequencyvs Input Voltage
Figure5: Peak Inductor Currentvs Output
Current
Figure6: Output Voltagevs Output Current
ST730A6/9
Figure7: Switching Waveforms, Continuous
Conduction
Figure8: Switching Waveforms, Discontinuous
Conduction
Figure9: Line Transient
Figure10: Load Transient
