MAX8772 Datasheet PDF – Quick PWM Controller

Part Number : MAX8772

Function : Dual-Phase, Quick PWM Controller for IMVP-6+ CPU Core Power Supplies

Package : QFN 40 Pin Type ( 6mm x 6mm )

Manufacturers : Maxim Integrated

Image :
MAX8772 datasheet

Description :

The MAX8770, MAX8771, MAX8772 are 2/1-phase interleaved Quick-PWM step-down VID power supply controllers for notebook CPUs. True out-of-phase operation reduces input ripple current requirements and output voltage ripple while easing component selection and layout difficulties.

The Quick-PWM control provides instanta neous response to fast load current steps. Active voltage positioning reduces power dissipation and bulk output capacitance requirements and allows ideal positioning compensation for tantalum, polymer, or ceramic bulk out put capacitors.

Pinouts :

Features :

1. 7-Bit On-Board DAC: 0 to +1.5000V Output Adjust Range

2. Dynamic Phase Selection Optimizes Active/Sleep Efficiency

3. Transient Phase Overlap Reduces Output Capacitance

4. Integrated Boost Switches

5. Active Voltage Positioning with Adjustable Gain

6. Programmable 200kHz to 600kHz Switching Frequency

 

MAX8772 Datasheet PDF Download

MAX8772 pdf

Other data sheets within the file :

MAX8770GTL+, MAX8771, MAX8771GTL+, MAX8772

MAX232CPE Datasheet – RS-232 Drivers / Receivers – Maxim

This IC is dual driver/receiver.

Part Number : MAX232CPE

Function : +5V-Powered, Multichannel RS-232 Drivers/Receiver

Package : 16 Pin DIP Type

Manufacturers : Maxim Integrated

Image

max232cpe-rs-232-driver-receiver-maxim

 

Description :

The MAX220 Thru MAX249 family of line drivers/receivers is intended for all EIA/TIA-232E and V.28/V.24 communications interfaces, particularly applications where ±12V is not available.

These parts are especially useful in battery-powered systems, since their low-power shutdown mode reduces power dissipation to less than 5µW. The MAX225, MAX233, MAX235, and MAX245/MAX246/MAX247 use no external components and are recommended for applications where printed circuit board space is critical.

The MAX220-MAX249 are offered in 26 different packages with temperatures from 0 to +70°C up to -55°C to +125°C. See ordering information table at the end of the data sheet for all package and temperature options.
max232 Datasheet Selection Table

Applications/Uses

1. Battery-Powered RS-232 Systems
2. Interface Translation
3. Low-Power Modems
4. Multidrop RS-232 Networks
6. Portable Computing

MAX232CPE Drivers

The typical driver output voltage swing is ±8V when loaded with a nominal 5kΩRS-232 receiver and VCC= +5V. Output swing is guaranteed to meet the EIA/TIA-232E and V.28 specification, which calls for ±5V minimum driver output levels under worst-case conditions. These include a minimum 3kΩload, VCC= +4.5V, and maximum operating temperature. Unloaded driver output voltage ranges from (V+ -1.3V) to (V- +0.5V).

 

Pinout

max232cpe-datasheet-pinout

 

MAX232CPE Receivers

EIA/TIA-232E and V.28 specifications define a voltage level greater than 3V as a logic 0, so all receivers invert. Input thresholds are set at 0.8V and 2.4V, so receivers respond to TTL level inputs as well as EIA/TIA-232E and V.28 levels. The receiver inputs withstand an input overvoltage up to ±25V and provide input terminating resistors with nominal 5kΩ values. The receivers implement Type 1 interpretation of the fault conditions of V.28 and EIA/TIA-232E.

Reference Site : [ Wikipedia MAX232 Info ]

MAX232CPE Datasheet PDF

MAX232 pdf

 

Other data sheets within the file : MAX220 Thru MAX249, MAX222C-D, MAX223C-D

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