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 ..
ST750ACD ,ADJUSTABLE STEP-DOWN CURRENT MODE PWM DC-DC CONVERTERSAbsolute Maximum Ratings are those values beyond which damage to the device may occur. Functional o ..
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 . . . . . . ..
STR736FV2T6 ,32-BIT ARM7 FLASH MICROCONTROLLER WITH 3x CAN, 4 UARTs, 20 TIMERS, ADC, 12 COMM. INTERFACESThermal characteristics . . . . . . 482/52 STR73xFxx Contents6 Order codes . . . . . . ..
ST730ACD
5V STEP-DOWN CURRENT MODE PWM DC-DC CONVERTERS
UP TO 450mA LOAD CURRENTS 200kHz HIGH-FREQUENCY CURRENT-MODE PWM 85% TO 96% EFFICIENCIES 33μH OR 100μH 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
DESCRIPTION The ST730A is a 5V output CMOS, step-down
switching regulator. The ST730A accepts inputs
between 5.2V and 11V and delivers 450mA.
Typical efficiencies are 85% to 96%.
Quiescent supply current is 0.8mA and only 0.3μA
in 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
guaranteed to be ±5% over line, load, and
temperature varations.
Fixed-frequency switching and absence of
subharmonic ruipple allows easy filtering of output
ripple and noise, as well as the use of small
external components. This regulators require only
a single inductor value to work in most
applications, so no inductor design is necessary.
Typical applications are: Cellular phones & radios,
portable Instruments, Portable Communications
Equipments and Computer Peripherals.
ST730A5V STEP-DOWN,
CURRENT-MODE PWM DC-DC CONVERTERS
SCHEMATIC DIAGRAM
ST730A
ABSOLUTE MAXIMUM RATINGS Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is
not implied.
THERMAL DATA (*) This value depends from thermal design of PCB on which the device is mounted.
ORDERING CODES
ST730A
CONNECTION DIAGRAM (top view)
PIN DESCRIPTION
ST730A
ELECTRICAL CHARACTERISTICS (VCC =5V, IO = 0mA, TA = TMIN to TMAX , unless otherwise specified.)
TYPICAL APPLICATION CIRCUIT
ST730A
TYPICAL PERFORMANCE CHARACTERISTICS (unless otherwise specified Tj = 25°C
Figure 1 : Efficency vs Output Current
Figure 2 : Supply Current vs Temperature
Figure 3 : Oscillator Frequency vs Temperature
Figure 4 : Oscillator Frequency vs Input Voltage
Figure 5 : Peak Inductor Current vs Output Current
Figure 6 : Output Voltage vs Output Current ST730A
Figure 7 : Switching Waveforms, Continuous Conduction
Figure 8 : Switching Waveforms, Discontinuous Conduction
Figure 9 : Line Transient
Figure 10 : Load Transient
