EEWORLDEEWORLDEEWORLD

Part Number

Search

S-8521F45MC-BQE-T2

Description
Switching Controller, 0.05A, 375kHz Switching Freq-Max, CMOS, PDSO5, SOT-23, 5 PIN
CategoryPower/power management    The power supply circuit   
File Size499KB,43 Pages
ManufacturerABLIC
Download Datasheet Parametric View All

S-8521F45MC-BQE-T2 Overview

Switching Controller, 0.05A, 375kHz Switching Freq-Max, CMOS, PDSO5, SOT-23, 5 PIN

S-8521F45MC-BQE-T2 Parametric

Parameter NameAttribute value
Is it Rohs certified?incompatible
MakerABLIC
Parts packaging codeSOT-23
package instructionLSSOP,
Contacts5
Reach Compliance Codecompliant
ECCN codeEAR99
Other featuresCAN ALSO FUNCTION IN PFM MODE
Analog Integrated Circuits - Other TypesSWITCHING CONTROLLER
Control TechnologyPULSE WIDTH MODULATION
Maximum input voltage16 V
Minimum input voltage2.5 V
Nominal input voltage5.4 V
JESD-30 codeR-PDSO-G5
length2.9 mm
Number of functions1
Number of terminals5
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Maximum output current0.05 A
Package body materialPLASTIC/EPOXY
encapsulated codeLSSOP
Package shapeRECTANGULAR
Package formSMALL OUTLINE, LOW PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)NOT SPECIFIED
Certification statusNot Qualified
Maximum seat height1.3 mm
surface mountYES
Switch configurationSINGLE
Maximum switching frequency375 kHz
technologyCMOS
Temperature levelINDUSTRIAL
Terminal formGULL WING
Terminal pitch0.95 mm
Terminal locationDUAL
Maximum time at peak reflow temperatureNOT SPECIFIED
width1.6 mm
Base Number Matches1
Rev.7.4
_20
PWM CONTROL, PWM/PFM SWITCHING CONTROL
STEP-DOWN SWITCHING REGULATOR CONTROLLERS
S-8520/8521 Series
The S-8520/8521 Series consists of CMOS step-down
switching regulator-controllers with PWM control (S-8520
Series) and PWM/PFM switching control (S-8521 Series).
These devices contain a reference voltage source,
oscillation circuit, error amplifier, and other components.
The S-8520 Series provides low-ripple power, high-
efficiency, and excellent transient characteristics thanks to
a PWM control circuit capable of varying the duty ratio
linearly from 0 % up to 100 %. The series also contains
an error amplifier circuit as well as a soft-start circuit that
prevents overshoot at startup.
The S-8521 Series works with either PWM control or PFM
control, and can switch from one to the other. It normally
operates using PWM control with a duty ratio of 25 % to
100 %, but under a light load, it automatically switches to
PFM control with a duty ratio of 25 %. This series
ensures high efficiency over a wide range of conditions,
from standby mode to operation of peripheral equipment.
With the addition of an external Pch power MOS FET or
PNP transistor, a coil, capacitors, and a diode connected
externally, these ICs can function as step-down switching
regulators. They serve as ideal power supply units for
portable devices when coupled with the SOT-23-5 small
package, providing such outstanding features as low
current consumption.
Since this series can
accommodate an input voltage of up to 16 V, it is also
ideal when operating via an AC adapter.
Features
Low current consumption
During operation: 60
µA
max. (A, B types)
21
µA
max. (C, D types)
100
µA
max. (E, F types)
During shutdown: 0.5
µA
max.
Input voltage:
2.5 V to 16 V (B, D, F types)
2.5 V to 10 V (A, C, E types)
Output voltage:
Selectable between 1.5 V and 6.0 V in 0.1 V step
Duty ratio:
0 % to 100 % PWM control (S-8520 Series)
25 % to 100 % PWM/PFM switching control (S-8521 Series)
The only peripheral components that can be used with this IC are a Pch power MOS FET or PNP
transistor, a coil, a diode, and capacitors (If a PNP transistor is used, a base resistance and a capacitor will
also be required).
Oscillation frequency:
180 kHz typ.
(A, B types)
60 kHz typ.
(C, D types)
300 kHz typ.
(E, F types)
Soft-start function:
8 ms. typ.
(A, B types)
12 ms. typ.
(C, D types)
4.5 ms. typ.
(E, F types)
With a shutdown function
With a built-in overload protection circuit
Overload detection time: 4 ms. typ. (A type)
14 ms. typ. (C type)
2.6 ms. typ. (E type)
Seiko Instruments Inc.
1
Looking for Sitara AM335x starter kit
[color=#000000][font=arial][size=2]Is there anyone who has grabbed a Sitara[/size][/font][font=arial][size=2] [/size][/font][font=arial][size=2]AM335x[/size][/font][font=arial][size=2] [/size][/font][...
lonerzf Buy&Sell
[Award Notice] The first batch of winners who received 500 free LPC800 mini boards
Activity details: Get a free LPC800 mini board and experience the excellent performance of MO+ first! Activity link: [url=https://www.eeworld.com.cn/huodong/201303_NXP_LPC800/winning.html]https://www....
EEWORLD社区 NXP MCU
Use of Inductor
[i=s] This post was last posted by qwqwqw2088 on 2019-2-25 09:59 Edit[/i] [size=4][color=#000000][backcolor=white]1. Definition of Inductor[/backcolor][/color][/size] [size=4][color=#000000][backcolor...
qwqwqw2088 Analogue and Mixed Signal
【NUCLEO-L452RE Review】+ Comprehensive Performance Analysis
I received the NUCLEO-L452RE board last Friday. When I first saw it, I felt that the board was very good and very beautiful.Let's take a look at the main peripherals and performance of this chip:1. Fr...
紫色的天空 stm32/stm8
The data read by LM4F120 IIC 24C02 are all FF
I need help. I've been working on iic for the past few days and I'm going crazy :Cry: The framework of the program uses qs-rgb. The following is about reading the data. I don't know why all I get is F...
ddlxiaoxu Microcontroller MCU
ADC noise problem of F28335
When my signal is connected to the ADC of F28335, there is noise. When it is disconnected from the ADC, the noise disappears. Is my ADC broken? When I was soldering the circuit, due to poor soldering,...
caijianfa55 Microcontroller MCU

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

Robot
development
community

Index Files: 1998  1129  1824  2756  2766  41  23  37  56  7 
Datasheet   0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Room 1530, 15th Floor, Building B, No. 18 Zhongguancun Street, Haidian District, Beijing Telephone: (010) 82350740 Postal Code: 100190
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved 京ICP证060456号 京ICP备10001474号-1 电信业务审批[2006]字第258号函 京公网安备 11010802033920号