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TEA1202 Даташит

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TEA1202
Philips
Philips Electronics Philips
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GENERAL DESCRIPTION
The TEA1202TS is a fully integrated battery power unit including a high efficiency DC-to-DC converter which runs from a single-cell NiCd or NiMH battery, two low drop-out voltage regulators and a low battery detector. The circuit can be arranged in many ways to optimize the application circuit of a power supply system. Therefore, most inputs and outputs are separated, the DC-to-DC converter can be arranged for upconversion or downconversion and the regulators can also be used as power switches. One regulator can be used completely independent of the rest of the system, and the low battery detector can be configured for several types of batteries. Accurate low battery detection is possible while all other blocks are switched off.

FEATURES
• Fully integrated battery power unit, including complete
   DC-to-DC converter circuit, two Low Drop-Out voltage
   regulators (LDOs) and a battery low detector
• Configurable for 1, 2 or 3-cell Nickel-Cadmium (NiCd)
   or Nickel Metal Hybrid (NiMH) batteries and 1 Lithium
   Ion (Li-Ion) battery
• Guaranteed DC-to-DC converter start-up from 1-cell
   NiCd or NiMH battery, even with a load current
• Upconversion or downconversion
• Internal power MOSFETs featuring a low RDSon of
   approximately 0.1 Ω
• Synchronous rectification for high efficiency
• Soft start
• PWM-only operating option
• LDO drop-out voltage of 30 mV at 50 mA
• Both LDOs can also be used as low-ohmic power
   switches
• Stable LDO performance with ceramic capacitors
• At start-up, LDO1 can be loaded
• Stand-alone low battery detector requires no additional
   supply voltage
• Low battery detection level at 0.90 V, externally
   adjustable to a higher level
• Adjustable output voltages
• Shut-down function
• Small outline package
• Advanced 0.6 µm BICMOS process.

APPLICATIONS
• Cellular phones
• Cordless phones
• Personal Digital Assistants (PDAs)
• Portable audio players
• Pagers
• Mobile equipment.

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