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MAX16974
High-Voltage, 2.2MHz, 2A Automotive Step-Down Converter with Low Operating Current
2A Automotive Buck that Meets OEMs' Tight Power Budgets
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Status
Active: In Production.
Description
The MAX16974 is a 2A, current-mode, step-down converter with an integrated high-side switch. It is designed to operate with 3.5V to 28V input voltages, while using only 35µA quiescent current at no load. The switching frequency is adjustable from 220kHz to 2.2MHz by an external resistor and can be synchronized to an external clock. The output voltage is pin selectable to be 5V fixed or 1V to 10V adjustable. The wide input voltage range makes the device ideal for automotive and industrial applications.
The device operates in skip mode for reduced current consumption in light-load applications. An adjustable reset threshold helps keep microcontrollers alive down to their lowest specified input voltage. Protection features include cycle-by-cycle current limit, overvoltage, and thermal shutdown with automatic recovery. The device also features a power-good monitor to ease power-supply sequencing.
The device operates over the -40°C to +125°C automotive temperature range and is available in a 16-pin TSSOP-EP package.
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Data Sheet
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An evaluation kit is available: MAX16974EVKIT
Key Features
- Wide 3.5V to 28V Input Voltage Range
- 42V Input Transient Tolerance
- 5V Fixed or 1V to 10V Adjustable Output Voltage
- Integrated 2A Internal High-Side Switch
- Adjustable Switching Frequency (220kHz to 2.2MHz)
- Operates Through Cold Crank with High Duty Cycle
- Frequency Synchronization Input
- Internal Boost Diode
- 35µA Skip-Mode Operating Current
- 5µA Typical Shutdown Current
- Adjustable Power-Good Output Level and Timing
- 3.3V Logic Level to 42V Compatible Enable Input
- Current-Limit, Thermal-Shutdown, and Overvoltage Protections
- Automotive Temperature Range: -40°C to +125°C
- AEC-Q100 Qualified
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Applications/Uses
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Key Specifications:
| Step-Down Switching Regulators |
| Part Number |
VIN
(V) |
VIN
(V) |
VOUT
(V) |
VOUT
(V) |
Preset VOUT
(V) |
Max. IOUT
(A) |
Output Adjust. Method |
DC-DC Outputs |
Oper. Freq.
(kHz) |
Package/Pins |
Smallest Available Pckg.
(mm2) |
Budgetary Price |
| min |
max |
min |
max |
≤ |
max w/pins |
See Notes |
| MAX16974 |
3.5 |
28 |
1 |
10 |
5 |
2 |
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1 |
2200 |
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33.2 |
$3.37 @1k |
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See All Step-Down Switching Regulators (288)
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Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.
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Diagram
Typical Application Circuit
Application Notes
Product Guides
Reliability Reports
| Show FIT data for: |
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| Request Reliability Report for: |
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Software/Models
Ordering Information
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Part Number
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Free
Sample |
Buy |
Status
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Package:
TYPE PINS FOOTPRINT
DRAWING CODE/VAR *
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Temp |
RoHS/Lead-Free?
Materials Analysis
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| MAX16974AUE/V+
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Active |
TSSOP-EP;16 pin;33.2 mm²
Outline Drawing:21-0108 (PDF)
Land Pattern: 90-0120 (PDF)
Use pkgcode/variation: U16E+3*
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-40°C to +125°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX16974AUE/V+T
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Active |
TSSOP-EP;16 pin;33.2 mm²
Outline Drawing:21-0108 (PDF)
Land Pattern: 90-0120 (PDF)
Use pkgcode/variation: U16E+3*
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-40°C to +125°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
Notes:
- Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
- Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
- Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product Naming Conventions.
- * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.
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Similar Products by Function
| MAX16975 |
28V, 1.2A Automotive Step-Down Converter with Low Operating Current |
| MAX16976 |
28V, 600mA Automotive Step-Down Converter with Low Operating Current |
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Evaluation Kits
Products with Similar Part Numbers
Didn't Find What You Need?
Information Index
Document Ref.: 19-5630
Rev 1;
2011-07-22
This page last modified: 2011-07-22
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