MIC2010 Micrel Semiconductor, MIC2010 Datasheet - Page 3

• Manufacturer Part Number: MIC2010
• Description: USB Power Controller Advance Information
• Manufacturer: Micrel Semiconductor

Pin Description
September 2000
MIC2010
Pin Number
11, 12
13, 14
9, 10
15
16
1
2
3
4
5
6
7
8
Pin Name
FAULT1
FAULT2
RSET1
RSET2
OUT2
OUT1
MAIN
GND
AUX
EN1
EN2
S3#
NC
Pin Function
Fault Status (Output): Channel 1, active-low; weak pull-up to AUX or open-
drain. FAULT1 is asserted LOW when channel 1 is in a thermal shutdown
state or overcurrent condition for more than 5ms. MIC2070 latches this
output in its asserted state upon overcurrent condition. Toggling EN1 or
removing the load will reset the circuit breaker latch, and deassert FAULT1.
Enable (Input): Channel 1, active-high (–1) or active-low (–2). Toggling this
input also resets the latched output of the MIC2070.
Control (Input): When this input is high, the MAIN inputs are connected to
OUT1 and OUT2 via 100m , 500mA MOSFET switches. When this input is
LOW, the AUX inputs are connected to OUT1 and OUT2 via 500m
MOSFET switches with a current-limit threshold specified by external
resistors, RSET1 and RSET2.
Current-Limt Set Resistor (Input): Channel 1. A resistor connected to this
input sets the current-limit threshold in AUX mode (S3# asserted). The
current-limit threshold is determined by approximately 18/RSET1.
Auxiliary 5V Supply (Input): Also used as power supply for internal circuitry.
No Connection: This pin may be connected to other pins without restriction.
Current-Limit Set Resistor (Input): Channel 2. A resistor connected to this
input sets the current-limit threshold in AUX mode (S3# asserted). The
current-limit threshold is determined by approximately 18/RSET2.
Ground
Channel 2 (Output): Both pins must be connected together externally.
5V Main Supply (Input): All MAIN inputs must be connected together
externally.
Channel 1 (Output): Both pins must be connected together externally.
Enable (Input): Channel 2, active-high (–1) or active-low (–2). Toggling this
input also resets the latched output for the MIC2070.
Fault Status (Output): Channel 2, active-low; weak pull-up to AUX or open-
drain. FAULT2 is asserted LOW when channel 2 is in a thermal shutdown
state or overcurrent condition for more than 5ms. MIC2070 latches this
output in it's asserted state upon overcurrent condition. Toggling EN2 or
removing load will reset the circuit breaker latch, and deassert FAULT2.
3
MIC2010/2070
Micrel