MAX8969EWL50+T by Analog Devices

Step-Up Converter for Handheld Applications

Status: Active
Series: MAX8969
RoHS: Unknown
Download Datasheet Visit Manufacturer Site View Pricing & Stock
The MAX8969 is a simple 1A step-up converter in a small package that operates in any single-cell Li-ion application. This IC provides protection features such as input undervoltage lockout, short circuit, and overtemperature shutdown. The IC transitions to skip mode seamlessly under lightload conditions to improve efficiency. Under these conditions, switching occurs only as needed, reducing switching frequency and supply current to maintain high efficiency. For higher efficiency when input voltage is closer to the output voltage, two special modes of operation are available: track and automatic track. These modes allow users to balance quiescent current (IQ) vs. transient response time into boost mode. In both modes, the p-channel MOSFET acts as a current-limited switch such that VOUT follows VIN. However, in track mode, the boost circuits are disabled and the system controls the boost function with the EN, TREN inputs (IQ = 30µA). In automatic track mode (ATM), the boost circuits are enabled and the device automatically transitions into boost mode when VIN falls to 95% of the target VOUT (IQ = 60µA). The IC is available in a small, 1.25mm × 1.25mm, 9-bump WLP (0.4mm pitch) package. Design Solution: Can You Hear Me Now? Extend the Life of Your Hearable Device ›

Where to Buy

Prices starting from US$0.81

Distributor Stock
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Farnell
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Analog Devices
from US$0.89
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Newark Electronics
from US$0.87
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Features

Flexible System Integration Up to 1A Output Current 2.5V to 5.5V Input Voltage Range 3.3V to 5.7V Output Voltage Options
Up to 1A Output Current
2.5V to 5.5V Input Voltage Range
3.3V to 5.7V Output Voltage Options
Integrated Protection Increases System Robustness Undervoltage Lockout (UVLO) Short-Circuit Protection Overtemperature Shutdown
Undervoltage Lockout (UVLO)
Short-Circuit Protection
Overtemperature Shutdown
High Efficiency and Low Quiescent Current Extends Battery Life Over 90% Efficiency with Internal Synchronous Rectifier 60µA IQ in Automatic Track Mode 45µA IQ in Step-Up Mode 30µA IQ in Track Mode 1µA Shutdown Current Skip Mode Under Light Load Condition Improves Efficiency True Shutdown™ Prevents Current Flow from OUT_ to LX_ Soft-Start Limits Inrush Current to 480mA
Over 90% Efficiency with Internal Synchronous Rectifier
60µA IQ in Automatic Track Mode
45µA IQ in Step-Up Mode
30µA IQ in Track Mode
1µA Shutdown Current
Skip Mode Under Light Load Condition Improves Efficiency
True Shutdown™ Prevents Current Flow from OUT_ to LX_
Soft-Start Limits Inrush Current to 480mA
Small Package and High Frequency Operation Reduce Board Space 9-Bump 1.25mm × 1.25mm WLP Package 3MHz PWM Switching Frequency Small External Components
9-Bump 1.25mm × 1.25mm WLP Package
3MHz PWM Switching Frequency
Small External Components

Specifications

VIN (V) (min) 2.5
VIN (V) (max) 5.5
VOUT1 (V) (min) 3.3
VOUT1 (V) (max) 5
IOUT1 (A) (max) 1
Switch Type Internal
Preset VOUT (V) 5
Output Adjust. Method Preset
Synchronous Switching? Yes
IQ (mA) (typ) 0.045
Shutdown Mode Supply Current (µA) (typ) 0.8
Shutdown Mode Supply Current (µA) (max) 5
# DC-DC Outputs 1
Switching Frequency (kHz) 3000
Package/Pins WLP/9
BudgetaryPrice (See Notes) 0.61

MAX8969EWL50+T Maxim Integrated Parts by Analog Devices

DC/DC CONV BOOST 3MHZ 85DEG C

Semiconductors - ICs
> Power Management ICs - PMIC
> Voltage Regulators
> DC / DC Fixed Switching Regulators
Status: Unknown
Series: -
RoHS: Unknown
Download Datasheet Visit Manufacturer Site View Pricing & Stock
The MAX8969 is a simple 1A step-up converter in a small package that operates in any single-cell Li-ion application. This IC provides protection features such as input undervolt- age lockout, short circuit, and overtemperature shutdown. The IC transitions to skip mode seamlessly under light- load conditions to improve efficiency. Under these condi- tions, switching occurs only as needed, reducing switching frequency and supply current to maintain high efficiency. For higher efficiency when input voltage is closer to the output voltage, two special modes of operation are avail- able: track and automatic track. These modes allow users to balance quiescent current (IQ) vs. transient response time into boost mode. In both modes, the p-channel MOSFET acts as a current-limited switch such that VOUT follows VIN. However, in track mode, the boost circuits are disabled and the system controls the boost func- tion with the EN, TREN inputs (IQ = 30µA). In automatic track mode (ATM), the boost circuits are enabled and the device automatically transitions into boost mode when VIN falls to 95% of the target VOUT (IQ = 60µA). The IC is available in a small, 1.25mm x 1.25mm, 9-bump WLP (0.4mm pitch) package.

Specifications

Topology Boost (Step Up)
Input Voltage Min 2.5V
Input Voltage Max 5.5V
DC / DC Converter IC Case WLP
No. of Pins 9Pins
Output Current 1A
Output Voltage Nom. 5V
Switching Frequency 3MHz
Operating Temperature Max 85°C
Product Range -
Automotive Qualification Standard -
MSL MSL 1 - Unlimited
SVHC No SVHC (27-Jun-2018)

Alternative Descriptions

1A Boost Converter for low inp | Analog Devices
Dc/Dc Conv, Boost, 3Mhz, 85Deg C | Newark Electronics
DC/DC CONV, BOOST, 3MHZ, 85DEG C | element14

Frequently Asked Questions

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Is the MAX8969EWL50+T RoHS compliant?

This part has not been flagged as RoHS Compliant.

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