Micrel Manuals

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169

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26

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Last added

2022-10-25

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Micrel MIC705/706/707/708 Supervisory Circuit Datasheet

Datasheet 10 pages · 421 KB · EN

The MIC705, MIC706, MIC707 and MIC708 are inexpensive supervisory circuits that monitor power supplies in microprocessor‑based systems. They provide a debounced manual reset input, a watchdog timer (1.6 s for MIC705/706), power‑fail warning, and reset outputs with selectable voltage thresholds of 4.65 V or 4.40 V.

Typical applications include automotive systems, intelligent controllers, battery‑powered computers and any design that requires reliable microprocessor power monitoring. The devices are supplied in an 8‑Pin SOIC package and include pins for manual reset, watchdog input, power‑fail comparator and reset outputs.

Covers: General Description · Features · Applications · Ordering Information · Pin Configuration · Electrical Characteristics

Latest Micrel manuals

• Micrel MIC705/706/707/708 Supervisory Circuit Datasheet

  Datasheet 10 pages · 421 KB · EN

  The Micrel MIC705/706/707/708 datasheet describes low‑cost microprocessor supervisory circuits with watchdog timer, reset and power‑fail monitoring.

• MICREL MIC2207 3mmx3mm 2MHz 3A PWM Buck Regulator handbook

  The Micrel MIC2207 is a high efficiency PWM buck (step-down) regulator that provides up to 3A of output current. The MIC2207 operates at 2MHz and has proprietary internal compensation that allows a closed loop bandwidth of over 200KHz. The low on-resistance internal p-channel MOSFET of the MIC2207 allows efficiencies over 94%, reduces external components count and eliminates the need for an expensive current sense resistor. The MIC2207 operates from 2.7V to 5.5V input and the output can be adjusted down to 1V. The devices can operate with a maximum duty cycle of 100% for use in low-dropout conditions. The MIC2207 is available in the exposed pad 3mm x 3mm MLF-12L package with a junction operating range from –40°C to +125°C.

• MICREL MIC2205 2MHz PWM Synchronous Buck Regulator with LDO Standby Mode handbook

  This document introduces Micrel MIC2205 2MHz PWM synchronous buck regulator, which features a LOWQ™ LDO standby mode that draws only 18µA of quiescent current.

• MICREL MIC2199 handbook

  The MIC2199 is a high-power 300kHz synchronous buck DC-to-DC controller housed in a small 4mm × 4mm MLF™ 12-lead package. The MIC2199 operates from a wide 4.5V to 32V input and can be programmed for output voltages from 0.8V to 6V. The wide input voltage capability makes the MIC2199 an ideal solution for point-of-load DC-to-DC con- version in 5V, 12V, 24V, and 28V systems. The 300kHz switching frequency allows the use of a small inductor and small output capacitors. The current mode PWM control along with the external COMP pin allows for ease of stability compensation and fast transient response across a wide range of applications. An all N-Channel synchronous architecture and powerful output drivers allow up to 20A of output current capability.

• MICREL MIC2196 handbook

  Micrel MIC2196 400kHz SO-8 Boost Control IC is a high efficiency PWM boost control IC housed in a SO-8 package, optimized for low input voltage applications. 2.9V to 14V wide input voltage range, can be used to efficiently boost voltages in 3.3V, 5V, and 12V systems, as well as 1- or 2-cell Li Ion battery powered applications. 2 Ω output driver allows the MIC2196 to drive large external MOSFET, making it ideal for space-sensitive applications. Space-saving SO-8 package with low pin-count minimizes external components. 400kHz PWM operation allows a small inductor and small output capacitors to be used. MIC2196 can implement all-ceramic capacitor solutions. Efficiencies over 90% are achievable over a wide range of load conditions with the MIC2196’s PWM boost control scheme. MIC2196 features a low current shutdown mode of 1µA and programmable undervoltage lockout.

• MICREL MIC2194 400kHz SO-8 Buck Control IC handbook

  The Micrel MIC2194 is a 400kHz SO-8 package PWM buck control IC which can efficiently step down voltages in 3.3V, 5V and 12V systems as well as 1- or 2-cell Li Ion battery powered applications

• MICREL MIC2193 handbook

  Micrel MIC2193 400kHz SO-8 Synchronous Buck Control IC is a high efficiency PWM synchronous buck control IC from Micrel. It is housed in the space-saving SO-8 package. The 2.9V to 14V input voltage range allows it to efficiently step down voltages in 3.3V, 5V, and 12V systems as well as 1- or 2-cell Li Ion battery powered applications. The MIC2193 solution saves valuable board space. The device is housed in the space-saving SO-8 package, whose low pin-count minimizes external components. Its 400kHz PWM operation allows a small inductor and small output capacitors to be used. The MIC2193 can implement all- ceramic capacitor solutions.

• MICREL MIC2186 Low Voltage PWM Control IC handbook

  Micrel MIC2186 is a high efficiency boost PWM control IC with a wide input voltage range of 2.9V to 14V. It can be used to efficiently boost voltages in 1- or 2-cell Li-Ion battery powered applications, as well as to boost voltages in fixed 3.3V, 5V, or 12V systems.

• MICREL MIC2185 Low Voltage Synchronous Boost PWM Control IC handbook

• MICREL MIC2184 Low Voltage Buck PWM Control IC handbook

  Micrel MIC2184 is a high efficiency PWM buck control IC with a wide input voltage range of 2.9V to 14V, and can be used to efficiently step voltages down in 1- or 2-cell Li Ion battery powered applications, as well as in fixed 3.3V, 5V, or 12V systems. Efficiencies over 90% are achievable over a wide range of load conditions with the MIC2184’s PWM control scheme.

• MICREL MIC2183 Low Voltage Synchronous Buck PWM Control IC handbook

  Micrel MIC2183 is a high efficiency PWM synchronous buck control IC from Micrel. It is available in 16-pin SOP and QSOP packages with a junction temperature range from -40°C to +125°C. The input voltage range is 2.9V to 14V and the maximum output current is 5A.

• MICREL MIC2182 High-Efficiency Synchronous Buck Controller handbook

  The MIC2182 is a synchronous buck controller from Micrel. It features a fully N-channel synchronous architecture and powerful output drivers, supporting up to a 20A output current capacity. The PWM and skip-mode control scheme allows efficiency to exceed 95% over a wide range of load current, making it ideal for battery-powered applications as well as high-current distributed power supplies. The MIC2182 operates from a 4.5V to 32V input and can operate with a maximum duty cycle of 86% for use in low-dropout conditions. It also features a shutdown mode that reduces quiescent current to 0.1µA. The MIC2182 achieves high efficiency over a wide output current range by automatically switching between PWM and skip mode. Skip-mode operation enables the converter to maintain high efficiency at light loads by turning off circuitry pertaining to PWM operation, reducing the no-load supply current from 1.6mA to 600µA. The operating mode is internally selected according to the output load conditions. Skip mode can be defeated by pulling the PWM pin low which reduces noise and RF interference. The MIC2182 is available in a 16-pin SOP (small-outline package) and SSOP (shrink small-outline package) with an operating range from –40°C to +85°C.

• MICREL MIC2178 2.5A Synchronous Buck Regulator handbook

  This document introduces the features and characteristics of the Micrel MIC2178 2.5A synchronous buck regulator.

• MICREL MIC2172/3172 100kHz 1.25A Switching Regulators handbook

  The MIC2172/3172 is a complete 100kHz SMPS current-mode controller with an internal 65V 1.25A power switch. It operates from 3V to 40V input voltage range and features low external parts count, thermal shutdown, and can operate in most switching topologies. It is suitable for applications such as laptop/palmtop computers, toys, hand-held instruments, and off-line converters.

• MICREL MIC2171 100kHz 2.5A Switching Regulator handbook

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