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MAX8620Y
µPMIC for Microprocessors or DSPs in Portable Equipment
Step-Down DC-DC Integrates 2 LDOs and Reset in Tiny TDFN to Power Microprocessor in Portables
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Status
Active: In Production.
Description
The MAX8620Y micro-power-management integrated circuit (µPMIC) powers low-voltage microprocessors or DSPs in portable devices. The µPMIC includes a high efficiency step-down DC-DC converter, two lowdropout linear regulators (LDOs), a microprocessor reset output, and power-on/off control logic. This device maintains high efficiency at light loads with a low 115µA supply current, and its miniature TDFN package makes it ideal for portable devices.
The MAX8620Y's step-down DC-DC converter utilizes a proprietary 4MHz hysteretic-PWM control scheme that allows for ultra-small external components. Internal synchronous rectification improves efficiency and eliminates the external Schottky diode that is required in conventional step-down converters. The output voltage is adjustable from 0.6V to 3.3V, with guaranteed output current up to 500mA.
The MAX8620Y's two LDOs offer low 45µVRMS output noise and a low dropout of only 200mV at 200mA. Each LDO delivers at least 300mA of continuous output current. The output voltages are pin selectable from 1.8V to 3.3V for flexibility.
A microprocessor reset output (active-low RESET) monitors OUT1 and warns the system of impending power loss allowing safe shutdown. Active-low RESET asserts during power-up, power-down, shutdown, and fault conditions where VOUT1 is below its regulation voltage.
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Data Sheet
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An evaluation kit is available: MAX8620YEVKIT
Key Features
- Three Regulators and a Reset in One Package
- High-Efficiency Step-Down Converter
- Up to 4MHz Fixed Switching Frequency
- 500mA Guaranteed Output Current
- 0.6V to 3.3V Adjustable Output Voltage
- ±2% Initial Accuracy
- Fast Voltage-Positioning Transient Response
- Internal Synchronous Rectifier
- Two 300mA LDO Regulators
- 200mV Dropout at 200mA Load
- Low 45µVRMS Output Noise
- 3% Accuracy over Line, Load, and Temperature
- Overcurrent Protection
- Nine Pin-Selectable Output-Voltage Settings
- 30ms (min) Active-Low RESET Output Flag
- 2.7V to 5.5V Input
- 115µA (typ) Supply Current at No Load
- Thermal-Overload Protection
- Tiny 3mm x 3mm x 0.8mm TDFN Package
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Applications/Uses
- Cellular Handsets
- Microprocessor and DSP Solutions including MSM™, Intel XScale™, ARM™, and OMAP™
- PDAs
- Smartphones/PDA Phones
- Wireless Local Area Networks (WLANs)
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Key Specifications:
| Multifunction PMICs |
| Part Number |
Primary Topology |
Monitor/Control Features |
DC-DC/Power Features |
VIN
(V) |
VIN
(V) |
VOUT
(V) |
VOUT
(V) |
Max. IOUT
(A) |
Max. IOUT
(A) |
Oper. Freq.
(kHz) |
Package/Pins |
Smallest Available Pckg.
(mm2) |
Budgetary Price |
| min |
max |
min |
max |
≥ |
≤ |
max w/pins |
See Notes |
| MAX8620Y |
Step-Down |
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| Adj. Frequency | | Current Limit | | Internal Pwr. FETs | | Soft Start | | Sync. Rectifier |
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2.7 |
5.5 |
0.6 |
3.3 |
0.5 |
0.5 |
4000 |
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9.6 |
$2.37 @1k |
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See All Multifunction PMICs (96)
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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 Operating Circuit
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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| MAX8620YC/DW
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Active |
WAFER;
Land Pattern: Not Available
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See data sheet
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| MAX8620YC/W
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Active |
WAFER;
Land Pattern: Not Available
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0°C to +70°C
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See data sheet
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| MAX8620YETD+
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Active |
TDFN-EP;14 pin;9.6 mm²
Outline Drawing:21-0137 (PDF)
Land Pattern: 90-0063 (PDF)
Use pkgcode/variation: T1433+2*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX8620YETD+T
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Active |
TDFN-EP;14 pin;9.6 mm²
Outline Drawing:21-0137 (PDF)
Land Pattern: 90-0063 (PDF)
Use pkgcode/variation: T1433+2*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX8620YETD-T
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Active |
TDFN-EP;14 pin;9.6 mm²
Outline Drawing:21-0137 (PDF)
Land Pattern: 90-0063 (PDF)
Use pkgcode/variation: T1433-2*
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-40°C to +85°C
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RoHS/Lead-Free: No
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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Information Index
Document Ref.: 19-3564
Rev 0;
2005-02-08
This page last modified: 2009-12-09
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