MIC2525-2BM Micrel Semiconductor, MIC2525-2BM Datasheet

no-image

MIC2525-2BM

Manufacturer Part Number
MIC2525-2BM
Description
Manufacturer
Micrel Semiconductor
Datasheet

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MIC2525-2BM
Manufacturer:
MICREL
Quantity:
26 192
Part Number:
MIC2525-2BM
Manufacturer:
MICREL/麦瑞
Quantity:
20 000
Company:
Part Number:
MIC2525-2BM
Quantity:
3 961
Company:
Part Number:
MIC2525-2BM
Quantity:
2 048
Company:
Part Number:
MIC2525-2BM
Quantity:
4 988
General Description
The MIC2525 is an integrated high-side power switch, opti-
mized for self-powered and bus-powered Universal Serial
Bus (USB) applications. Few external components are nec-
essary to satisfy USB requirements.
The MIC2525 satisfies the following USB requirements: each
switch channel supplies up to 500mA as required by USB
downstream devices; the switch’s low on-resistance meets
USB voltage drop requirements; fault current is limited to
typically 750mA, well below the UL 25VA safety require-
ments; and a flag output is available to indicate fault condi-
tions to the local USB controller. Soft start eliminates the
momentary voltage drop on the upstream port that may occur
when the switch is enabled in bus-powered applications.
Additional features include thermal shutdown to prevent
catastrophic switch failure from high-current loads,
undervoltage lockout (UVLO) to ensure that the device re-
mains off unless there is a valid input voltage present, and
3.3V and 5V logic compatible enable inputs.
The MIC2525 is a UL recognized component and is available
in active-high and active-low versions in 8-pin DIP and SOIC
packages.
For new designs, please see the MIC2025/2075.
Typical Application
UL Recognized Component
January 2000
MIC2525
Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 944-0970 • http://www.micrel.com
4.50V to 5.25V
Upstream V
100mA max.
GND
V
D+
D–
BUS
BUS
Data
1µF
MIC5207-3.3
IN
GND
OUT
Single-Port USB Self-Powered Hub
3.3V
1µF
3.3V USB Controller
VIN
OVERCURRENT
GND
10k
ON/OFF
1
Features
• Compliant to USB specifications
• UL Recognized Component
• 3V to 5.5V input
• 500mA minimum continuous load current per port
• 140m maximum on-resistance
• 1.25A maximum short circuit current limit
• Open-drain fault flag pins
• 110 A typical on-state supply current
• 1 A typical off-state supply current
• Output can be forced higher than input (off-state)
• Thermal shutdown
• 2.4V typical undervoltage lockout (UVLO)
• 1ms turn-on (soft-start) and fast turnoff
• Active-high or active-low enable versions
• 8-pin SOIC and DIP packages
Applications
• USB hosts and self-powered hubs
• USB bus-powered hubs
• Hot plug-in power supplies
• Battery-charger circuits
Not Recommended for New Designs
EN
FLG
GND
NC
USB Power Control Switch
MIC2525-2
100k
OUT
OUT
NC
IN
Refer to MIC2025
MIC2525
5.0V
V
CC
0.1µF
150µF
Data
Ferrite
Beads
GND
V
BUS
D+
D–
USB
Port
MIC2525
Micrel

Related parts for MIC2525-2BM

MIC2525-2BM Summary of contents

Page 1

... The MIC2525 recognized component and is available in active-high and active-low versions in 8-pin DIP and SOIC packages. For new designs, please see the MIC2025/2075. ...

Page 2

... MIC2525 Ordering Information Part Number MIC2525-1BM MIC2525-2BM MIC2525-1BN MIC2525-2BN Pin Configuration Pin Description Pin Number Pin Name FLG 3 GND OUT MIC2525 Enable Temperature Range Active High – +85 C Active Low – +85 C Active High – +85 C Active Low – ...

Page 3

... OUT OUT increasing decreasing = 5V 10mA L = 3.3V 10mA increasing = decreasing 2.4V and on is 0.8V for the MIC2525-2. The enable input has approximately 3 (Note 2) ) ...................................... +3V to +5. ........ – + ......................................................... 120 C ............................................................. 130 C/W JA Min Typ 0.75 110 2.1 0.8 1.9 –1 ...

Page 4

... TEMPERATURE ( C) Output Rise Time vs. Temperature 5 4 Awaiting Full 3 Characterization Data -40 - 100 TEMPERATURE ( C) MIC2525 Output On-Resistance vs. Temperature 140 120 100 -40 - 100 TEMPERATURE ( C) Off-State Supply Current vs ...

Page 5

... F L Short Circuit Response Enable into Short Circuit Thermal Shutdown 1.1A Short Circuit Current-Limiting TIME (250ms/div.) 5 Turn-On, Turnoff Characteristics 144mA TIME (2.5ms/div.) Short Circuit Response (Short Applied to Output) 1A Short Circuit Current Limit Thermal Shutdown TIME (500ms/div.) MIC2525 Micrel ...

Page 6

... MIC2525 Short Circuit Transient Response (Short Applied to Output) 2.76A 1A Current Limit TIME (500 s/div.) Test Circuit 5V MIC2525 Ferrite 0.1µF Bead 10k MIC2525 I OUT EN OUT C FLG GND OUT NC NC Functional Characteristics Test Circuit 6 Current-Limit Response (Ramped Load) Current Limit Threshold ...

Page 7

... MIC2525 Block Diagram EN OSC. CHARGE PUMP January 2000 THERMAL UVLO SHUTDOWN GATE CONTROL GND 7 1.2V IN REFERENCE CURRENT LIMIT OUT FLG Micrel MIC2525 ...

Page 8

... This constant current is specified as the short circuit current limit in the “Electrical Characteristics” table important to note that the MIC2525 will deliver load current up to the current-limit threshold which is typically 1.6A. Refer to “Func- tional Characteristics: Current-Limit Response” photo for details ...

Page 9

... Floating the input may cause unpredictable operation. EN should not be allowed to go negative with respect to GND. Soft Start The MIC2525 presents a high impedance when off, and slowly becomes a low impedance as it turns on. This reduces inrush current and related voltage drop that results from ...

Page 10

... In USB applications required that output bulk capaci- tance is utilized to support hot-plug events. When the MIC2525 is enabled, the flag may go active for about 1ms due to inrush current exceeding the current-limit setpoint. Additionally, during hot-plug events, inrush currents may also cause the flag to go active for 30 s ...

Page 11

... SEATING PLANE 8-Pin SOP (M) PIN 1 DIMENSIONS: INCH (MM) 0.380 (9.65) 0.370 (9.40) 0.135 (3.43) 0.125 (3.18) 0.380 (9.65) 0.130 (3.30) 0.320 (8.13) 0.100 (2.54) 0.0375 (0.952) 8-Pin Plastic DIP ( 0.010 (0.25) 0.007 (0.18) 0.050 (1.27) 0.016 (0.40) 0.244 (6.20) 0.228 (5.79) 0.255 (6.48) 0.245 (6.22) 0.300 (7.62) 0.013 (0.330) 0.010 (0.254) Micrel MIC2525 ...

Page 12

... This information is believed to be accurate and reliable, however no responsibility is assumed by Micrel for its use nor for any infringement of patents or other rights of third parties resulting from its use. No license is granted by implication or otherwise under any patent or patent right of Micrel Inc. MIC2525 + 1 (408) 944-0970 http://www ...

Related keywords