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MAX16977
36V, 2A, 2.2MHz Step-Down Converter with Low Operating Current
Direct Car Battery Voltage Conversion to 3.3V Above AM Radioband at 2A
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Status
Active: In Production.
Description
The MAX16977 is a 2A, current-mode, step-down converter with an integrated high-side switch. The device is designed to operate with input voltages from 3.5V to 36V while using only 30µA quiescent current at no load. The switching frequency is adjustable from 1MHz 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 adjustable from 1V to 10V. The wide input voltage range along with its ability to operate at high duty cycle during undervoltage transients make the device ideal for automotive and industrial applications.
The device operates in skip mode for reduced current consumption in light-load applications. Protection features include overcurrent 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 16-pin TSSOP and TQFN (5mm x 5mm) packages with exposed pads.
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Data Sheet
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An evaluation kit is available: MAX16977EVKIT
Key Features
- Wide 3.5V to 36V Input Voltage Range
- 42V Input Transients Tolerance
- High Duty Cycle During Undervoltage Transients
- 5V Fixed or 1V to 10V Adjustable Output Voltage
- Integrated 2A Internal High-Side (70mΩ typ) Switch
- Fast Load-Transient Response and Current-Mode Architecture
- Adjustable Switching Frequency (1MHz to 2.2MHz)
- Frequency Synchronization Input
- 30µA Standby Mode Operating Current
- 5µA Typical Shutdown Current
- Spread Spectrum (Optional)
- Overvoltage, Undervoltage, Overtemperature, and Short-Circuit Protections
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Applications/Uses
- Automotive
- High-Voltage Input DC-DC Converters
- Industrial/Military
- Point-of-Load Applications
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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 |
| MAX16977 |
3.5 |
36 |
1 |
10 |
5 |
2 |
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1 |
2200 |
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26 |
$3.53 @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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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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| MAX16977RATE/V+
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Active |
TQFN;16 pin;26 mm²
Outline Drawing:21-0140 (PDF)
Land Pattern: 90-0121 (PDF)
Use pkgcode/variation: T1655+4*
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-40°C to +125°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX16977RATE/V+T
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Active |
TQFN;16 pin;26 mm²
Outline Drawing:21-0140 (PDF)
Land Pattern: 90-0121 (PDF)
Use pkgcode/variation: T1655+4*
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-40°C to +125°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX16977RAUE/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 |
| MAX16977RAUE/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 |
| MAX16977SATE/V+
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Active |
TQFN;16 pin;26 mm²
Outline Drawing:21-0140 (PDF)
Land Pattern: 90-0121 (PDF)
Use pkgcode/variation: T1655+4*
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-40°C to +125°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX16977SATE/V+T
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Active |
TQFN;16 pin;26 mm²
Outline Drawing:21-0140 (PDF)
Land Pattern: 90-0121 (PDF)
Use pkgcode/variation: T1655+4*
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-40°C to +125°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX16977SAUE/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 |
| MAX16977SAUE/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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36V, 2.2MHz Step-Down Converter with Low Operating Current |
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Information Index
Document Ref.: 19-5844
Rev 0;
2011-05-05
This page last modified: 2012-05-07
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