MAX797ESE+ by Analog Devices

Step-Down Controllers with Synchronous Rectifier for CPU Power


The MAX796/MAX797/MAX799 high-performance, step-down DC-DC converters with single or dual outputs provide main CPU power in battery-powered systems. These buck controllers achieve 96% efficiency by using synchronous rectification and Maxim's proprietary Idle Modeâ„¢ control scheme to extend battery life at full-load (up to 10A) and no-load outputs. Excellent dynamic response corrects output transients caused by the latest dynamic-clock CPUs within five 300kHz clock cycles. Unique bootstrap circuitry drives inexpensive N-channel MOSFETs, reducing system cost and eliminating the crowbar switching currents found in some PMOS/NMOS switch designs. The MAX796/MAX799 are specially equipped with a secondary feedback input (SECFB) for transformer-based dual-output applications. This secondary feedback path improves cross-regulation of positive (MAX796) or negative (MAX799) auxiliary outputs. The MAX797 has a logic-controlled and synchronizable fixed-frequency pulse-width-modulating (PWM) operating mode, which reduces noise and RF interference in sensitive mobile-communications and pen-entry applications. The SKIP-bar override input allows automatic switchover to idle-mode operation (for high-efficiency pulse skipping) at light loads, or forces fixed-frequency mode for lowest noise at all loads. The MAX796/MAX797/MAX799 are all available in 16-pin DIP and narrow SO packages. See the table below to compare these three converters.

Where to Buy

Prices starting from US$8.77

Distributor Stock
Logo for RS
RS
from US$10.87
41
in stock
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Logo for Analog Devices
Analog Devices
from US$8.77
1,023
in stock
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Logo for Newark Electronics
Newark Electronics
from US$11.92
307
in stock
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Logo for element14
element14
from US$10.25
307
in stock
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Logo for Farnell
Farnell
from US$9.91
307
in stock
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Features

96% Efficiency
4.5V to 30V Input Range
2.5V to 6V Adjustable Output
Preset 3.3V and 5V Outputs (at up to 10A)
Multiple Regulated Outputs
+5V Linear-Regulator Output
Precision 2.505V Reference Output
Automatic Bootstrap Circuit
150kHz/300kHz Fixed-Frequency PWM Operation
Programmable Soft-Start
375µA Typ Quiescent Current (VIN = 12V, VOUT = 5V)
1µA Typ Shutdown Current

Specifications

VIN (V) (min) 4.5
VIN (V) (max) 30
VOUT1 (V) (min) 2.5
VOUT1 (V) (max) 6
IOUT1 (A) (max) 10
Switch Type External
Preset VOUT (V) 5
Output Adjust. Method PresetResistor
Synchronous Switching? Yes
# DC-DC Outputs 1
Switching Frequency (kHz) 340
Package/Pins SOIC (N)/16
BudgetaryPrice (See Notes) 6.2


MAX797ESE+ Semiconductors - ICs by Analog Devices

DC/DC CTRL SYNC BUCK 340KHZ NSOIC-16

Status: Unknown
Series: -
RoHS: Unknown
Download Datasheet Visit Manufacturer Site View Pricing & Stock

Specifications

Supply Voltage Min 5V
Supply Voltage Max 30V
No. of Outputs 1 Output, 1Outputs
Duty Cycle (%) 96%
Controller IC Case Style NSOIC
No. of Pins 16Pins
Switching Frequency 340kHz
Topology Synchronous Buck (Step Down)
Operating Temperature Min -40°C
Operating Temperature Max 85°C
Product Range -
Automotive Qualification Standard -
RoHS Phthalates Compliant To Be Advised
MSL MSL 1 - Unlimited
SVHC No SVHC (15-Jan-2018)

Alternative Descriptions

Step-Down Controllers with Syn | Analog Devices
Dc/Dc Ctrl, Sync Buck, 340Khz, Nsoic-16 | Newark Electronics
DC/DC CTRL, SYNC BUCK, 340KHZ, NSOIC-16 | element14
CONTRÔLEUR PWM SO16 | RS

Frequently Asked Questions

Where can I find additional details, specifications and documents for a MAX797ESE+ ?

Additional datasheets, footprints and schematics for MAX797ESE+ are listed on our Part Details page. You can also find images and similar parts to MAX797ESE+ on this page.

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Is the MAX797ESE+ RoHS compliant?

This part has not been flagged as RoHS Compliant.

Which authorised distributors for MAX797ESE+ have stock available?

Authorised distributors including Analog Devices, Newark Electronics, element14, Farnell and RS have stock available or on a lead time for MAX797ESE+ .

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