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MAX8671X
PMIC with Integrated Charger and Smart Power Selector for Handheld Devices
Five Regulated Output Voltages and Li+ Charger with Smart Power Control that Allows a System to Operate Without a Battery
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Status
Active: In Production.
Description
The MAX8671X integrated power-management IC (PMIC) is ideal for use in portable media players and other handheld devices. In addition to five regulated output voltages, the MAX8671X integrates a 1-cell lithium ion (Li+) or lithium polymer (Li-Poly) charger and Smart Power Selector™ with dual (AC-to-DC adapter and USB) power inputs. The dual-input Smart Power Selector supports end products with dual or single power connectors. All power switches for charging and switching the system load between battery and external power are included on-chip. No external MOSFETs are required.
Maxim's Smart Power Selector makes the best use of limited USB or AC-to-DC adapter power. Battery charge current and input current limit are independently set. Input power not used by the system charges the battery. Charge current and DC current limit are programmable up to 1A while USB input current can be set to 100mA or 500mA. Automatic input selection switches the system load from battery to external power. Other features include overvoltage protection, charge status and fault outputs, power-OK monitors, charge timer, and battery thermistor monitor. In addition, on-chip thermal limiting reduces battery charge rate to prevent charger overheating.
The MAX8671X offers adjustable voltages for all outputs. Similar parts with factory-preset output voltages are also available (contact factory for availability).
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Data Sheet
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An evaluation kit is available: MAX8671EVKIT
Key Features
- 16V-Tolerant USB and DC Inputs
- Automatically Powers from External Power or Battery
- Operates with No Battery Present
- Single-Cell Li+/Li-Poly Charger
- Three 2MHz Step-Down Regulators
- Two Low IQ Linear Regulators
- Output Power-Up Sequencing
- Thermal-Overload Protection
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Applications/Uses
- Digital Still Cameras
- Digital Video Cameras
- GPS/Portable Navigation Devices
- MP3 Players/Portable Media Players
- Portable Audio Players
- Smartphones/PDAs/PDA Phones
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Key Specifications:
| Battery Chargers |
| Part Number |
Cell Chemistry |
Lithium Ion Cells |
Protected VIN
(V) |
Charging VIN
(V) |
Charge Rate Set by |
Max. ICHG
(A) |
Charge Termination |
Charge Regulation |
EV Kit |
Oper. Temp.
(°C) |
Package/Pins |
Smallest Available Pckg.
(mm2) |
Budgetary Price |
| max |
max |
≥ |
max w/pins |
See Notes |
| MAX8671X |
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1 |
14 |
6.6 |
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1 |
Min. Charge Current |
Linear |
Yes |
-40 to +85 |
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26 |
$4.84 @1k |
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See All Battery Chargers (68)
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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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| Multifunction PMICs |
| Part Number |
Primary Topology |
Monitor/Control Features |
DC-DC/Power Features |
Battery Charger 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 |
| MAX8671X |
Step-Down |
Low Batt./POK Output |
| Current Limit | | Fixed Freq./PWM | | Internal Pwr. FETs | | Soft Start | | Sync. Rectifier |
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| Battery Charger | | Charge Timer | | Dual USB/ Adapter Input | | Input Current Limit | | Smart Pwr. Selector | | Thermal Die Regulation | | Thermistor Input | | USB Input |
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2.6 |
6.6 |
0.6 |
5 |
0.5 |
0.5 |
2000 |
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26 |
$4.84 @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
Simplified Applications Circuit
Application Notes
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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| MAX8671XETL+
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Active |
TQFN;40 pin;26 mm²
Outline Drawing:21-0140 (PDF)
Land Pattern: 90-0016 (PDF)
Use pkgcode/variation: T4055+1*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX8671XETL+T
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Active |
TQFN;40 pin;26 mm²
Outline Drawing:21-0140 (PDF)
Land Pattern: 90-0016 (PDF)
Use pkgcode/variation: T4055+1*
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-40°C to +85°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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Information Index
Document Ref.: 19-0885
Rev 0;
2007-09-12
This page last modified: 2010-06-04
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