Datasheet.kr   

2526 PDF 데이터시트 : 부품 기능 및 핀배열

부품번호 2526
기능 USB DUAL POWER CONTROL SWITCHES
제조업체 Allegro MicroSystems
로고 Allegro MicroSystems 로고 


전체 10 페이지

		

No Preview Available !

2526 데이터시트, 핀배열, 회로
2526 AND
2536
USB DUAL POWER CONTROL SWITCHES
A2526EL
The A2526EL and A2536EL are integrated high-side dual power
switches, optimized for self-powered and bus-powered Universal Serial
Bus (USB) applications. Few external components are necessary to
ENA 1
8 OUTA satisfy USB requirements. The A2526EL ENABLE inputs are active
FLGA 2
TFLGB 3
DUC Y.ENB 4
7 IN
6 GND
5 OUTB
Dwg. PP-070-6
ED PRNOCE ONLABSOLUTE MAXIMUM RATINGS
U ESupply Voltage, VIN ..................... 6.0 V
IN ROutput Voltage, VOUT .................. 6.0 V
T EOutput Current,
N FIOUT ................. Internally Limited
ENABLE Voltage Range,
O EVEN ......................... –0.3 V to 10 V
C RFault Flag Voltage, VFLG .............. 8.0 V
Fault Flag Current, IFLG ............. 50 mA
IS RPackage Power Dissipation,
PD ................................. See Graph
D OOperating Temperature Range,
FTA .......................... -40°C to +85°C
Junction Temperature, TJ ....... +150°C*
Storage Temperature Range,
high; the A2536EL are active low.
All devices are ideally suited for USB applications. Each switch
channel supplies up to 500 mA as required by USB peripheral devices.
In addition, the switch’s low on-resistance permits achieving the USB
voltage-drop requirements. Fault current is limited to typically
750 mA, satisfying the UL 25 VA safety requirements, and a flag
output is available to indicate a fault condition to the local USB
controller. Momentary voltage drops that may occur on the upstream
port when the switch is enabled in bus-powered applications is elimi-
nated by a “soft start” feature.
Additional features include thermal shutdown to prevent catastrophic
switch failure from high-current loads, undervoltage lockout to ensure
that the device remains OFF unless there is a valid input voltage
present, and 3.3 V and 5 V logic-compatible enable inputs.
These switches are provided in an 8-lead SOIC package on tape and
reel (“TR” suffix is added to part number) for use with automatic
handling equipment.
Features
s 2.7 V to 5.8 V Input
s Up to 500 mA Continuous Load Current per Port
s 140 mMaximum ON-Resistance
s 1.25 A Maximum Short-Circuit Current Limit
s Individual Open-Drain Fault Flag Outputs
s 125 µA Typical ON-State Supply Current
s <1 µA Typical OFF-State Supply Current
s Outputs Can be Forced Higher Than Input (off-state)
s Thermal Shutdown
s 2.2 V Typical Undervoltage Lockout
s 0.6 ms Turn On (soft-start) and Fast Turn Off
s A2526EL (active-high) Improved Replacement for MIC2526-1
s A2536EL (active-low) Improved Replacement for MIC2526-2
TS ........................... -65°C to 150°C
Applications
* Fault conditions that produce excessive
s USB Hosts and Self-Powered Hubs
junction temperature will activate device
thermal shutdown circuitry. These conditions
can be tolerated but should be avoided.
s USB Bus-Powered Hubs
s Hot Plug-In Power Supplies
s Battery-Charger Circuits




2526 pdf, 반도체, 판매, 대치품
2526 AND 2536
USB
DUAL POWER CONTROL
SWITCHES
FUNCTIONAL DESCRIPTION
Power switch
The power switch is an N-channel MOSFET with a maximum
on-state resistance of 140 m(VIN = 5 V). Configured as a
high-side switch, the power switch prevents current flow in
either direction if disabled. The drain body diode is discon-
nected from the source when the switch is OFF allowing the
output voltage to exceed the input voltage without causing
current conduction. The power switch supplies a minimum of
500 mA per switch.
Charge pump
An internal charge pump supplies power to the driver circuit
and provides the necessary voltage to pull the gate of the
MOSFET above the source. The charge pump operates from
input voltages as low as 2.7 V. The charge pump is limited to
2.5 µA to establish a controlled turn on time of typically 1 ms.
Driver
The driver controls the gate voltage of the power switch. To
limit large current surges and reduce the associated electromag-
netic interference (EMI) produced, the driver incorporates
circuitry that controls the rise times and fall times of the output
voltage. The rise time is typically 1 ms.
ENABLE (EN or EN)
The logic enable disables the power switch and the bias for the
charge pump, driver, and other circuitry to reduce the supply
current to less than 5 µA maximum when a logic high is present
on EN (A2526) or a logic low is present (A2536). The proper
logic level restores bias to the drive and control circuits and
turns the power ON. The enable input is a compatible with both
TTL and CMOS logic levels.
Fault Flag (FLG)
This open drain output is asserted (active low) when an
overcurrent or over temperature condition is encountered. The
output will remain asserted until the overcurrent or over
temperature condition is removed.
Current sense
A sense FET monitors the current supplied to the load. The
sense FET measures current more efficiently than conventional
resistance methods. When an overload or short circuit is
encountered, the current-sense circuitry sends a control signal to
the driver. The driver in turn reduces the gate voltage and
drives the power FET into its saturation region, which switches
the output into a constant-current mode and holds the current
constant while varying the voltage on the load.
Thermal sense
An internal thermal-sense circuit shuts off the power switch
when the junction temperature rises to approximately 165°C.
Hysteresis is built into the thermal sense circuit. After the
device has cooled approximately 10°C, the switch turns back
ON. The switch continues to cycle off and on until the fault is
removed.
Undervoltage lockout
A voltage-sense circuit monitors the input voltage. When the
input voltage is approximately 2 V, a control signal turns OFF
the power switch.
115 Northeast Cutoff, Box 15036
4 Worcester, Massachusetts 01615-0036 (508) 853-5000

4페이지










2526 전자부품, 판매, 대치품
2526 AND 2536
USB
DUAL POWER CONTROL
SWITCHES
OUTPUT SHORT-CIRCUIT PERFORMANCE
VFAULT
VOUT
VFAULT
VOUT
IOUT
4 A/
15 mΩ
SHORT CIRCUIT
5 ms/
IOUT
4 A/
2 µs/
15 mΩ
SHORT CIRCUIT
VFAULT
IOUT
400 mA/
500 ms/
VFAULT
THERMAL SHUTDOWN
15 mΩ
SHORT CIRCUIT
www.allegromicro.com
THERMAL
SHUTDOWN
IOUT
1 A/
500 ms/
RL = 15 mΩ
7

7페이지



구       성총 10 페이지
다운로드[ 2526.PDF 데이터시트 ]
구매 문의
일반 IC 문의 : 샘플 및 소량 구매
-----------------------------------------------------------------------

전력 반도체 판매 ( IGBT, TR 모듈, SCR, 다이오드 모듈 )

휴대전화 : 010-3582-2743


상호 : 아이지 인터내셔날

전화번호 : 051-319-2877, [ 홈페이지 ]



링크공유

링크 :

관련 데이터시트

부품번호상세설명 및 기능제조사
2520-6002UB

(2500 Series) HEADER CONNECTOR

3M Interconnect Solutions
3M Interconnect Solutions
2520-60xxxx

(2500 Series) HEADER CONNECTOR

3M Interconnect Solutions
3M Interconnect Solutions

추천 데이터시트

부품번호상세설명 및 기능제조사
CQ1565RT

FSCQ1565RT, Green Mode Fairchild Power Switch. In general, a Quasi-Resonant Converter (QRC) shows lower EMI and higher power conversion efficiency compared to conventional hard-switched converter with a fixed switching frequency.

Fairchild
Fairchild
KF16N25D

MOSFET의 기능은 N Channel MOS Field effect transistor입니다. This planar stripe MOSFET has better characteristics, such as fast switching time, low on resistance, low gate charge and excellent avalanche characteristics. It is mainly suitable for DC/DC Converters and switching mode power supplies.( Vdss=250V, Id=13A )

KEC
KEC

DataSheet.kr    |   2018   |  연락처   |  링크모음   |   검색  |   사이트맵