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MICROELECTRONICS
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Power Management GM2526
DUAL USB POWER SWITCH Power Management
Features
Compliant to USB Specifications Two Independent Switches Input from 3V to 5.5V Min. Continuous Load Current 500mA per port Max. ON-Resistance 140mW Max. Short Circuit Current Limit 1.25A Individual Open-Drain Fault Flag Pins ON-State Supply Current 110µA (typ.) OFF-State Supply Current 0.75µA (typ.) Thermal Shutdown Undervoltage Lockout (UVLO) Typically 2.4V 1ms Turn-ON (soft-start) and Fast Turn-OFF Active-High or Active-Low Enable Versions
Description
GM2526 is a dual high-side integrated power switch with independent enable and flag functions, designed for selfpowered and bus-powered Universal Serial Bus (USB) applications. GM2526 requires few external components. Each of the two switch channels supply up to 500mA as required by USB downstream devices. Each switch’s low on-resistance meets USB voltage drop requirements. Fault current is 750mA (typical). A flag output indicates fault conditions to the local USB controller. The soft-start feature prevents the transient voltage drop on the upstream port that can occur when the switch is enabled in bus-powered applications. Thermal shutdown protection prevents switch failure from high-current loads. Undervoltage lockout (UVLO) hold GM2526 off unless there is a correct input voltage. GM2526 has 3.3V and 5V logic-compatible Enable inputs. GM2526 is available in Active-High and Active-Low versions, and comes in 8-pin DIP and SOIC packages.
Application
USB Power Management USB Host- and Self-Powered Hubs USB Bus-Powered Hubs Hot Plug-In Power Supplies Battery-Charger Circuits
CONNECTION DIAGRAM
8 OUTA ENA/ ENA 1 FLGA 2 LOGIC, CHARGE PUMP 7 IN
ENB/ ENB 4
5 OUTB 6 GND
GM2526 H/ L
www.gammamicro.com
PRELIMINARY
GM2526 V0.1
1
FLGB 3
LOGIC, CHARGE PUMP
www.DataSheet4U.com
MICROELECTRONICS
A
A
Power Management GM2526
DUAL USB POWER SWITCH Power Management
MARKING INFORMATION & PIN CONFIGURATIONS (TOP VIEW)
SOP-8
IN OUTA GND OUTB
8 7 6 5
GM2526 AYWW
1 2 3 4
ENB/ ENB FLGB
ENA/ ENA FLGA
A= Assembly Location Y= Year WW= Weekly
ORDERING INFORMATION
Ordering Number
GM2526HS8T GM2526HS8R GM2526LS8T GM2526LS8R
Package
SOP - 8 SOP - 8 SOP - 8 SOP - 8
Shipping
100 Units / Tube 2,500 Units / Tape & Reel 100 Units / Tube 2,500 Units / Tape & Reel
* For detail Ordering Number identification, please see last page.
PIN DESCRIPTION
PIN NUMBER PIN SYMBOL EN(A/B) EN(A/B) FLG(A/B) FUNCTION Enable (Input): Logic-compatible enable input. High input > 2.1V typical Low input < 1.9V typical (H active high, L active low). Do not float. Fault Flag (Output): Active-low, open-drain output. Indicates overcurrent, and thermal shutdown, UVLO, OVLO Ground: Supply return. Supply Input: Output MOSFET drain. Also supplies IC's internal circuitry. Connect to positive supply. Switch Output: Output MOSFET source. Typically connect to switched side of load.
1/4
2/3
GM2526
6 7
GND IN OUT(A/B)
8/5
2
.