TS1107 Datasheet, PDF (1/22 Pages) Silicon Laboratories – Power Management Systems

TS1107/10 Data Sheet
Electronic Circuit Breaker: High Side Current Sense Amplifier with
Current Limiter Comparator and FET Control (TS1110 only)
The TS1110 Electronic Circuit Breaker uses a bidirectional current-sense amplifier for
current limit detection to disconnect the load by use of an external P-channel MOSFET.
An internal Current Limit Comparator with an adjustable threshold provides a latch capa-
ble output to signal when a fault condition has occurred. Once the Current Limit Compa-
rator’s output is latched the internal FET control is enabled which drives the gate of the
external P-channel MOSFET, disconnecting the load from the power supply. Once the
fault condition is removed, the system may be reset by strobing or pulling the latch ena-
ble pin, CLATCH, low. The Circuit Breaker system delay of the TS1110 is typically 428
µs. The Current Limiter system delay of the TS1107 and TS1110 is typically 670 µs.
Applications
• Power Management Systems
• Portable/Battery-Powered Systems
• Smart Chargers
• Battery Monitoring
• Overcurrent and Undercurrent Detection
• Remote Sensing
• Industrial Controls
KEY FEATURES
• Circuit Breaker with Latching Load
Disconnect
• Internal Latching Current Limiter
Comparator with CLATCH Reset
• Programmable Current Limit
• COUT Output Signals Fault Condition
• Low Supply Current
• Current Sense Amplifier: 0.68 µA
• TS1110 I_VDD: 1.16 µA
• TS1107 I_VDD: 1.15 µA
• High Side Bidirectional Current Sense
Amplifier
• Wide CSA Input Common Mode Range: +2
V to +27 V
• Low CSA Input Offset Voltage: 150
µV(max)
• Low Gain Error: 1% (max)
• Two Gain Options Available for TS1107
and TS1110:
• Gain = 20 V/V : TS1107-20 and
TS1110-20
• Gain = 200 V/V : TS1107-200 and
TS1110-200
• 16-Pin TQFN Packaging (3 mm x 3 mm)
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