Product Details
General Description
The MAX886/MAX888 power-management ICs are complete power systems
for wireless and satellite handsets. The devices operate from 3 to
6-cell NiCd/NiMH batteries or from 1 or 2-cell Li-Ion batteries.
They incorporate a high-efficiency, step-down DC-DC converter, a
regulated 5V charge pump, and four linear regulators. The
regulators supply power to the SIM, LCD, BB, DSP, and RF sections
of a cellular telephone handset. The step-down converter and linear
regulator outputs are adjustable by internal 4-bit DACs,
programmable through the I2C™-compatible serial interface. A
pushbutton on/off scheme activates a 5µA low-power shutdown mode.
The devices also feature a low-battery detector output and an
internal start-up timer.
Features
♦ 90% Efficient, 500mA Step-Down Converter
♦ Two 100mA DAC-Controlled LDOs
One 200mA DAC-Controlled LDO
One 20mA DAC-Controlled LDO
♦ 3 to 6-Cell NiCd or NiMH Operation
1 or 2-Cell Li-Ion Operation
♦ +2.7V to +12V Input Voltage Range
♦ 250µA Standby (PFM) Quiescent Current
♦ 5µA Shutdown Current
♦ I2C-Compatible Serial Interface
♦ Selectable 375kHz, 535kHz, 670kHz, 925kHz
(or Synchronizable) Switching Frequency
♦ Power-On Reset and Start-Up Timer
♦ Thermal Overload Protection
♦ Pushbutton On/Off Control
♦ Space-Saving 32-Pin TQFP Package (7mm x 7mm)
Applications
Satellite Phones
Private Mobile Radio (PMR)
Wireless Handsets
GSM Cellular/PCS Telephones
Specification
|
| Attribute | Attribute Value |
|---|
| Manufacturer | Maxim Integrated |
| Product Category | DC Switching Regulators |
| Series | MAX889 |
| Type | Voltage Converter |
| Packaging | Tube Alternate Packaging |
| Unit-Weight | 0.006596 oz |
| Mounting-Style | SMD/SMT |
| Package-Case | 8-SOIC (0.154", 3.90mm Width) |
| Operating-Temperature | -40°C ~ 85°C (TA) |
| Mounting-Type | Surface Mount |
| Output-Type | Adjustable |
| Function | Step-Down |
| Supplier-Device-Package | 8-SOIC |
| Number-of-Outputs | 1 Output |
| Topology | Charge Pump |
| Frequency-Switching | 2MHz |
| Current-Output | 200mA |
| Output-Configuration | Negative |
| Output Voltage | -2.5V |
| Voltage-Output-Max | -5.5V |
| Synchronous-Rectifier | No |
| Voltage-Input-Min | 2.7V |
| Voltage-Input-Max | 5.5V |
| Maximum Operating Temperature | + 85 C |
| Operating temperature range | - 40 C |
| Output-Voltage | - 2.5 V to - 5.5 V |
| Input-Voltage-MAX | 5.5 V |
| Output-Current | 200 mA |
| Switching-Frequency | 2 MHz |
| Part-#-Aliases | MAX889 |
| Package-Case | SOIC-Narrow-8 |
|
Form,Package,Functional compatible component
Descriptions
Charge Pump Switching Regulator IC Negative Adjustable -2.5V 1
Output 200mA 8-SOIC (0.154", 3.90mm Width)
Voltage Regulators - Switching Regulators f-Reg 200mA Invert Charge
Pump
Who we are?
is a professional electronic marketing corporation entirely engaged
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service for clients over 10 years, specialize in selling the new
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specialize in IC,diode,transistor,IGBT,DC-DC converter.....***has
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FAQ
Q: Are you trading company or manufacturer?
A: We are original manufacturer OF Integrated Circuit Chip . We can do OEM/ODM business.
Q: How long is your delivery time?
A: Group buying delivery time: 30-60 days; General delivery time: 20
days.
Q: What is your terms of payment?
A: T/T 30% as deposit, and 70% before delivery.
Q: How to buy your products?
A: You can buy the products from our company directly.Normally the
procedure is sign the contract, payment by T/T,Contact the shipping
company to delivery the goods to your country.Q: What is the warranty ?
A: The free warranty is one year from the day of Commissioning
qualified.If there is any fault for our products within the free
warranty period, we will repair it and change the fault assembly
for free
