MAX1823B Maxim, MAX1823B Datasheet
MAX1823B
Available stocks
Related parts for MAX1823B
MAX1823B Summary of contents
Page 1
... OUT_ to IN_) while in shutdown. The MAX1823 is available in a space-saving 10-pin µMAX package. The MAX1823/MAX1823A are enabled with an active-low signal, and the MAX1823B/MAX1823H are enabled with an active-high signal. For a single ver- sion of this device, refer to the MAX1946 data sheet. For a triple version, refer to the MAX1940 data sheet ...
Page 2
... Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS = 5V, ONA = ONB = GND (MAX1823/MAX1823A), ONA = ONB = IN (MAX1823B/MAX1823H), (Circuit of Figure ...
Page 3
... ELECTRICAL CHARACTERISTICS (continued) = 5V, ONA = ONB = GND (MAX1823/MAX1823A), ONA = ONB = IN (MAX1823B/MAX1823H), (Circuit of Figure INA INB +85 C, unless otherwise noted. Typical values are PARAMETER SYMBOL Short-Circuit Detect Threshold Continuous Current-Limit Blanking Timeout Period Short-Circuit Blanking Timeout Period Turn-On Delay ...
Page 4
... Dual USB Switch with Fault Blanking and Autoreset ELECTRICAL CHARACTERISTICS (Circuit of Figure (MAX1823B/MAX1823H +85 C, unless otherwise noted.) (Note 2) PARAMETER SYMBOL Supply Voltage Range Switch On-Resistance R Standby Supply Current Quiescent Supply Current OUT_ Off-Leakage Current Undervoltage-Lockout Threshold ...
Page 5
... 5.5V FAULT_ IN_ In latched-off state OUT_ In latched-off state, rising In latched-off state, V > 0.5V OUT_ to prevent permanent device damage. When the MAX1823A/MAX1823B RMS Typical Operating Characteristics = 5V, ON_ = GND (MAX1823/MAX1823A), ON_ = IN_ (MAX1823B/MAX1823H), T QUIESCENT CURRENT vs. TEMPERATURE 5. 4.5V IN ...
Page 6
... Dual USB Switch with Fault Blanking and Autoreset = 5V, ON_ = GND (MAX1823/MAX1823A), ON_ = IN_ (MAX1823B/MAX1823H), T (Circuit of Figure INA INB unless otherwise noted.) SWITCH OFF-LEAKAGE vs. TEMPERATURE 1000 100 10 1 0.1 0.01 -40 - TEMPERATURE ( C) TURN-ON TIME vs. TEMPERATURE ( RISE 4.0 3 4. ...
Page 7
... 5V/div IN FAULTA 5V/div 2A/div OUTA OUTA _______________________________________________________________________________________ Dual USB Switch with Fault Blanking and Autoreset Typical Operating Characteristics (continued) = 5V, ON_ = GND (MAX1823/MAX1823A), ON_ = IN_ (MAX1823B/MAX1823H), T AUTORESET CURRENT vs. INPUT VOLTAGE (MAX1823A/MAX1823B + + ...
Page 8
... Dual USB Switch with Fault Blanking and Autoreset = 5V, ON_ = GND (MAX1823/MAX1823A), ON_ = IN_ (MAX1823B/MAX1823H), T (Circuit of Figure INA INB unless otherwise noted.) SWITCH TURN-OFF TIME ( OFF FALL MAX1823 toc22 A B 1ms/div 5V/div ONA 2V/div OUTA PIN NAME ONA C ontr ol Inp ut for tch A ...
Page 9
... Active loads are not expected to have measurable currents when the supply is below 0.5V. The MAX1823/MAX1823A can also be reset from fault manually by toggling ON_ (ON_ for the MAX1823B/MAX1823H) for that channel. _______________________________________________________________________________________ Dual USB Switch with Fault Blanking and Autoreset ...
Page 10
... Fault Blanking The MAX1823 limits switch current in three ways. When ON_ is deasserted (high for MAX1823/MAX1823A, low for MAX1823B/MAX1823H), the switch is off and leak- age dominates the residual output current. When ON_ is asserted (low for MAX1823/MAX1823A, high for MAX1823B/MAX1823H), the switch supplies a continu- ous output current of at least 720mA ...
Page 11
... USB port to ring during a load step. The MAX1823 is capable of driving inductive loads, but avoids exceeding the device’s absolute maximum rat- ings. Usually the load inductance is relatively small, and the MAX1823’s input includes a substantial bulk capaci- tance from an upstream regulator as well as local bypass capacitors, limiting overshoot ...
Page 12
... LIM IN OUT 12 ______________________________________________________________________________________ For a 5V input and 1V output, the maximum power dis- sipation per switch is: Since the package power dissipation is only 444mW, the MAX1823 die temperature exceeds the thermal- shutdown threshold, and the switch output shuts down until the junction temperature cools The duty cycle and period are strong functions of the ambient temperature and the PC board layout ...
Page 13
... D1 FRONT VIEW Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 13 © ...