MAX1565：Small, High-Efficiency, Five-Channel Digital Still Camera Power Supply
Small, High-Efficiency, Five-Channel Digital Still Camera Power Supply Integrates Ultra-High-Efficiency Step-Up/Step-Down DC-DC Converters Along with Three Auxiliary Step-Up Controllers
The MAX1565 provides a complete power-supply solution for digital still and video cameras through the integration of ultra-high-efficiency step-up/step-down DC-to-DC converters along with three auxiliary step-up controllers. The MAX1565 is targeted for applications that use either 2 or 3 alkaline or NiMH batteries as well as those using a single lithium-ion (Li+) battery. The step-up DC-to-DC converter accepts inputs from 0.7V to 5.5V and regulates a resistor-adjustable output from 2.7V to 5.5V. It uses internal MOSFETs to achieve 95% efficiency. Adjustable operating frequency facilitates design for optimum size, cost, and efficiency. The step-down DC-to-DC converter can produce output voltages as low as 1.25V and also utilizes internal MOSFETs to achieve 95% efficiency. An internal soft-start ramp minimizes surge current from the battery. The converter can operate from the step-up output providing buck-boost capability with up to 90% compound efficiency, or it can run directly from the battery if buck- boost operation is not needed. The MAX1565 features auxiliary step-up controllers that power CCD, LCD, motor actuator, and backlight circuits. The device also features low-cost expandability by supplying power, an oscillator signal, and a reference to the MAX1801 SOT23 slave controller that supports step-up, SEPIC, and flyback configurations. The MAX1565 is available in a space-saving 32-pin thin QFN package.
Key Features
| MAX1565: Typical Operating Circuit Applications/Uses
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DataSheet
| title | Download file |
|---|---|
| MAX1565 Data Sheet | MAX1565.pdf |
Parametrics
| Part Number | Primary Topology | Monitor/Control Features | DC-DC/Power Features | LCD/LED/Flash/CCD Features | VIN (V) | VIN (V) | VOUT (V) | VOUT (V) | Max. IOUT (A) | Max. IOUT (A) | Oper. Freq. (kHz) | Package/Pins | Budgetary Price |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| min | max | min | max | See Notes | |||||||||
| MAX1565 | Step-Down Step-Up Step-Up/Down | Low Batt./POK Output Output OVP Output UVP Shutdown | Adj. Frequency Current Limit Fixed Freq./PWM Internal Switch Soft Start Sync. Rectifier | TFT Bias | 0.7 | 5.5 | 1.25 | 5 | 0.8 | 0.8 | 1000 | TQFN/32 | $2.61 @1k |
Design kits & evaluation modules
Related Products
Ordering Information
| Part Number | Status | Recommended Replacement | Package | Temp | RoHS |
|---|---|---|---|---|---|
| MAX1565ETJ | No Longer Available | MAX1565ETJ+ | TQFN,;32 pin;26 mm² | -40°C to +85°C | No |
| MAX1565ETJ+ | Active | TQFN,;32 pin;26 mm² | -40°C to +85°C | Lead Free | |
| MAX1565ETJ+T | Active | TQFN,;32 pin;26 mm² | -40°C to +85°C | Lead Free | |
| MAX1565ETJ-T | No Longer Available | MAX1565ETJ+T | QFN;32 pin | -40°C to +85°C | See data sheet |
- MAX1565.pdf MAX1565
- 典型工作电路 MAX1565
