|
|
Part: S-8353A28MC-IQN-T2
Category:
Power Management
-> Regulators
-> Switching Regulators
Description: 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 Consumption Operating = 18.7 µA (3.3V, 50KHz) ;; Current Consumption Shutdown = 0.5 µA Max. ;; Efficiency Typ. = 85% ;; Package = SOT-23-5 SOT-23-3 SOT-89-3
Company: Seiko Instruments
Datasheet: Download S-8353A28MC-IQN-T2 datasheet File size : 4 kB
Request For quote: Find where to buy S-8353A28MC-IQN-T2
Datasheet text preview:
Rev.1.2_00
ULTRA-SMALL PACKAGE PWM CONTROL, PWM/PFM SWITCHING CONTROL STEP-UP SWITCHING REGULATOR
S-8353/8354 Series
The S-8353/8354 Series is a CMOS step-up switching regulator which mainly consists of a reference voltage source, an oscillation circuit, a power MOS FET, an error amplifier, a phase compensation circuit, a PWM controller (S-8353 Series) and a PWM/PFM switching controller (S-8354 Series). Simply attaching a coil, capacitor, and diode externally can configure the step-up switching regulator. In addition to the above features, the small package and low power consumption of this series make it ideal for portable device applications requiring high efficiency. The S-8353 Series realizes low ripple, high efficiency, and excellent transient characteristics due to its PWM controller, which can vary the duty ratio linearly from 0 % to 83 % (from 0 % to 78 % for 250 kHz models), optimally-designed error amplifier, and phase compensation circuits. The S-8354 Series features a PWM/PFM switching controller that can switch the operation to a PFM controller with a duty ratio is 15 % under a light load to prevent a decline in the efficiency due to the IC operating current.
Features
· Low voltage operation: · Low current consumption: · Duty ratio: · External parts: · Output voltage: · Oscillation frequency: · Soft start function: Start-up is guaranteed from 0.9 V (IOUT=1 mA) During operation: 18.7 µA (3.3 V, 50 kHz, typ.) During shutdown: 0.5 µA (max.) Built-in PWM/PFM switching control circuit (S-8354 Series) 15 % to 83 % (30 kHz and 50 kHz models), 15 % to 78 % (250 kHz models) Coil, capacitor, and diode Can be set in 0.1 V steps between 1.5 and 6.5 V (for VDD/VOUT separate types) or 2.0 and 6.5 V (for other than VDD/VOUT separate types). Accuracy of ±2.4%. 30 kHz, 50 kHz, and 250 kHz 6 ms (50 kHz, typ.)
Applications
· · · · Power supplies for portable equipment such as digital cameras, electronic notebooks, and PDAs Power supplies for audio equipment such as portable CD/MD players Constant voltage power supplies for cameras, video equipment, and communications equipment Power supplies for microcomputers
Packages
Package name SOT-23-3 SOT-23-5 SOT-89-3 Package MP003-A MP005-A UP003-A Drawing code Tape MP003-A MP005-A UP003-A Reel MP003-A MP005-A UP003-A
Seiko Instruments Inc.
1
ULTRA-SMALL PACKAGE PWM CONTROL, PWM/PFM SWITCHING CONTROL STEP-UP SWITCHING REGULATOR Rev.1.2_00 S-8353/8354 Series Block Diagrams
1. A, C, H type (Without Shutdown Function) CONT VOUT Oscillation circuit IC internal power supply PWM control, + PWM/PFM switching - control circuit Soft start built-in Phase reference power compensation supply circuit
VSS
Figure 1 2. A, H type (With Shutdown Function) CONT VOUT Oscillation circuit IC internal power supply PWM control, + PWM/PFM switching - control circuit Soft start built-in Phase reference power compensation supply circuit ON / OFF Figure 2 3. D, J type CONT VDD Oscillation circuit IC internal power supply PWM control, + PWM/PFM switching - control circuit Soft start built-in Phase reference power compensation supply circuit Figure 3 VSS VOUT
VSS
2
Seiko Instruments Inc.
ULTRA-SMALL PACKAGE PWM CONTROL, PWM/PFM SWITCHING CONTROL STEP-UP SWITCHING REGULATOR Rev.1.2 _00 S-8353/8354 Series
Product Name Structure
1. Function List Table 1 Product name Control system S-8353AxxMC S-8353AxxMA S-8353AxxUA S-8353CxxMA S-8353DxxMC S-8353HxxMC S-8353HxxMA S-8353HxxUA S-8353JxxMC S-8354AxxMC S-8354AxxMA S-8354AxxUA S-8354CxxMA S-8354DxxMC S-8354HxxMC S-8354HxxMA S-8354HxxUA S-8354JxxMC PWM PWM PWM PWM PWM PWM PWM PWM PWM PWM/PFM switching PWM/PFM switching PWM/PFM switching PWM/PFM switching PWM/PFM switching PWM/PFM switching PWM/PFM switching PWM/PFM switching PWM/PFM switching Switching Shutdown VDD/VOUT frequency [kHz] function separate type 50 50 50 30 50 250 250 250 250 50 50 50 30 50 250 250 250 250 Yes Yes Yes Yes Yes Yes Yes Yes Package SOT-23-5 SOT-23-3 SOT-89-3 SOT-23-3 SOT-23-5 SOT-23-5 SOT-23-3 SOT-89-3 SOT-23-5 SOT-23-5 SOT-23-3 SOT-89-3 Application Application requiring shutdown function Application not requiring shutdown function Application not requiring shutdown function For pager Application in which output voltage is adjusted by external resistance Application requiring shutdown function and thin coil Application not requiring shutdown function and requiring thin coil Application not requiring shutdown function and requiring thin coil Application in which output voltage is adjusted by external resistance and that requires thin coil Application requiring shutdown function Application not requiring shutdown function Application not requiring shutdown function
SOT-23-3 For pager SOT-23-5 SOT-23-5 SOT-23-3 SOT-89-3 SOT-23-5 Application in which output voltage is adjusted by external resistance Application requiring shutdown function and thin coil Application not requiring shutdown function and requiring thin coil Application not requiring shutdown function and requiring thin coil Application in which output voltage is adjusted by external resistance and that requires thin coil
Seiko Instruments Inc.
3
Others parts begin by s0
S0-1 S0-2 S0-3 S0-4 S0-5 S0-6 S0-7 S0-8 S0-9 S0-10 S0-11 S0-12 S0-13 S0-14 S0-15 S0-16 S0-17 S0-18 S0-19 S0-20 S0-21 S0-22 S0-23
|
|
|
