Product Descriptions
The MAX735 and MAX755 are CMOS, inverting switch-mode regulators with internal power MOSFETs. TheMAX755 operatesfrom a +2.7Vto +9V input and generatesan adjustable negative output; 1W output power is guaran-teed when powered from a +4.5V input. The MAX735operates from a +4.0V to +6.2V output; 200mA outputcurrent is guaranteed for inputs greater than +4.5V. Qui-escent supply current for the MAX735 is typically 1.6mA,and a shutdown mode reduces this to 10uA. These power-conserving features, along with high efficiency and appli-cations circuits that lend themselves to miniaturization,make the MAX735/MAX755 excel in a broad range ofon-card and portable-equipment applications.
The MAX735/MAX755 employ a high-performance current-mode pulse-width modulation (PWM) control scheme toprovide tight output-voltage regulation and low subhar-monic noise. The fixed-frequency oscillator is factory-trimmed to 160kHz, allowing for easy noise filtering. Theregulators are production tested in actual application cir-cuits, and output accuracy is guaranteed to within +5 Percnt over all specified conditions of line, load, and temperature.The input-to-output differential of the MAX755 is limitedto VIN + IVOUTI≤ 11.7V.
For an adjustable-output device with a wider input voltagerange, refer to the MAX759 data sheet. For a fixed -5V partwith a wider input voltage range, refer to the MAX739 datasheet. For fixed -12V and -15V versions, see the MAX736and MAX737 data sheets. For lower-power applications,refer to the MAX635/636/637 data sheet.
Product Features
Converts +2.7V to +9V Input to AdjustableNegative Output (MAX755)
Converts +4.0V to +6.2V Input to -5V Output (MAX735)
1W Guaranteed Output Power (ViN > 4.5V)
78 Percent Typical Efficlency
1.6mA Quiescent Current (MAX735)
10uA Shutdown Mode
160kHz Fixed-Frequency Oscillator
Current-Mode PWM - Low Noise and Jitter
Soft-Start
Simple Application Circult
Product Applications
Board-Level DC-DC Conversion
Battery-Powered Equipment
Computer Peripherals
Product Specifications
| Attribute | Attribute value |
| ANSM-Part# | ANSM-MAX735ESA+ |
| Category | Integrated Circuits (ICs) |
| Power Management (PMIC) | |
| Voltage Regulators - DC DC Switching Regulators | |
| Mfr | - |
| Series | - |
| Packaging | Tube |
| Part Status | Active |
| Function | Step-Up/Step-Down |
| Output Configuration | Negative |
| Topology | Buck-Boost |
| Output Type | Fixed |
| Number of Outputs | 1 |
| Voltage - Input (Min) | 4V |
| Voltage - Input (Max) | 6.2V |
| Voltage - Output (Min/Fixed) | -5V |
| Voltage - Output (Max) | - |
| Current - Output | 275mA |
| Frequency - Switching | 160kHz |
| Synchronous Rectifier | No |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) |
| Supplier Device Package | 8-SOIC |
| Base Product Number | MAX735 |
Product Photos
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