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MAX1960, MAX1961, MAX1962
2.35V to 5.5V, 0.5% Accurate, 1MHz PWM Step-Down Controllers with Voltage Margining
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Status
Active: In Production.
Description
The MAX1960/MAX1961/MAX1962 high-current, high-efficiency voltage-mode step-down DC-DC controllers operate from a 2.35V to 5.5V input and generate output voltages down to 0.8V at up to 20A. An on-chip charge pump generates a regulated 5V for MOSFET drive. Additionally, adaptive dead-time drivers allow a
wide variety of MOSFETs to be used without risking shoot-through.
Fixed-frequency PWM operation and external synchronization make these controllers suitable for telecom and datacom applications. The operating frequency is programmable to either 500kHz or 1MHz, or from 450kHz to 1.2MHz with an external clock. A clock output is provided to synchronize another converter for 180° out-of-phase operation. A high closed-loop bandwidth provides excellent transient response for applications with dynamic loads.
Lossless current sensing in the MAX1960 and MAX1961 is achieved by monitoring the drain-to-source voltage of the low-side external FET. The current limit is scalable to accommodate a wide variety of MOSFETs and load currents. The MAX1962 has 10% accurate sense-resistor-based current limiting.
The MAX1960 and MAX1962 have an adjustable output voltage from 0.8V to 4.95V. The MAX1961 and MAX1962 have four preset output voltages (1.5V, 1.8V, 2.5V, and 3.3V) and feature 0.5% voltage accuracy over temperature, line, and load variations. The MAX1960 and MAX1961 also feature voltage-margining control inputs that shift the output voltage up or down by 4% for system testing.
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Data Sheet
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An evaluation kit is available: MAX1960EVKIT
Key Features
- 0.5% Accurate Output
- Operates from 2.35V to 5.5V Supply
- Generates Low Output Voltage Down to 0.8V
- On-Chip Charge Pump Provides 5V Gate Drive
- Ceramic or Electrolytic Capacitors
- 94% Efficiency
- External Synchronization from 450kHz to 1.2MHz
- 500kHz/1MHz Fixed-Frequency PWM Operation
- Fast Transient Response
- Two Converters Can Operate 180° Out-of-Phase
- ±4% Voltage Margining for System Test
- 10% Accurate Current Sensing (MAX1962)
- Adaptive Dead Time Prevents Shoot-Through
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Applications/Uses
- ASIC, FPGA, DSP, and CPU Core and I/O Voltages
- Cellular Base Stations
- Server and Storage Systems
- Telecom and Network Equipment
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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) |
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 |
| MAX1960 |
2.35 |
5.5 |
0.8 |
5 |
- |
15 |
15 |
Resistor |
1 |
1000 |
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54.2 |
$2.33 @1k |
| MAX1961 |
4.5 |
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$2.45 @1k |
| MAX1962 |
4.5 |
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$2.98 @1k |
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See All Step-Down Switching Regulators (284)
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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
Functional Diagram
Application Notes
Reliability Reports
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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| MAX1960EEP
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Active |
QSOP;20 pin;54.2 mm²
Outline Drawing:21-0055 (PDF)
Land Pattern: 90-0168 (PDF)
Use pkgcode/variation: E20-1*
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-40°C to +85°C
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RoHS/Lead-Free: No
Materials Analysis |
| MAX1960EEP+
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Active |
QSOP;20 pin;54.2 mm²
Outline Drawing:21-0055 (PDF)
Land Pattern: 90-0168 (PDF)
Use pkgcode/variation: E20+1*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX1960EEP+T
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Active |
QSOP;20 pin;54.2 mm²
Outline Drawing:21-0055 (PDF)
Land Pattern: 90-0168 (PDF)
Use pkgcode/variation: E20+1*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX1960EEP-T
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Active |
QSOP;20 pin
Land Pattern: Not Available
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-40°C to +85°C
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See data sheet
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| MAX1961EEP
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Active |
QSOP;20 pin;54.2 mm²
Outline Drawing:21-0055 (PDF)
Land Pattern: 90-0168 (PDF)
Use pkgcode/variation: E20-1*
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-40°C to +85°C
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RoHS/Lead-Free: No
Materials Analysis |
| MAX1961EEP+
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Active |
QSOP;20 pin;54.2 mm²
Outline Drawing:21-0055 (PDF)
Land Pattern: 90-0168 (PDF)
Use pkgcode/variation: E20+1*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX1961EEP+T
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Active |
QSOP;20 pin;54.2 mm²
Outline Drawing:21-0055 (PDF)
Land Pattern: 90-0168 (PDF)
Use pkgcode/variation: E20+1*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX1961EEP-T
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Active |
QSOP;20 pin
Land Pattern: Not Available
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-40°C to +85°C
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See data sheet
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| MAX1962EEP
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Active |
QSOP;20 pin;54.2 mm²
Outline Drawing:21-0055 (PDF)
Land Pattern: 90-0168 (PDF)
Use pkgcode/variation: E20-1*
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-40°C to +85°C
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RoHS/Lead-Free: No
Materials Analysis |
| MAX1962EEP+
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Active |
QSOP;20 pin;54.2 mm²
Outline Drawing:21-0055 (PDF)
Land Pattern: 90-0168 (PDF)
Use pkgcode/variation: E20+1*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
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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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| MAX1962EEP+T
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Active |
QSOP;20 pin;54.2 mm²
Outline Drawing:21-0055 (PDF)
Land Pattern: 90-0168 (PDF)
Use pkgcode/variation: E20+1*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX1962EEP-T
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Active |
QSOP;20 pin
Land Pattern: Not Available
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-40°C to +85°C
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See data sheet
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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
Evaluation Kits
| MAX1960EVKIT |
Evaluation Kit for the MAX1960, MAX1961, MAX1962 |
Products with Similar Part Numbers
| MAX1960EVKIT |
Evaluation Kit for the MAX1960, MAX1961, MAX1962 |
Didn't Find What You Need?
Information Index
Document Ref.: 19-2740
Rev 1;
2010-02-23
This page last modified: 2010-02-23
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