MAX17512ATP+ Maxim Integrated, MAX17512ATP+ Datasheet

MAX17512ATP+

Manufacturer Part Number

MAX17512ATP+

Description

Current & Power Monitors & Regulators High Speed Valley Current Regulator

Manufacturer

Maxim Integrated

Datasheet

1.MAX17512ATP.pdf (15 pages)

Specifications of MAX17512ATP+

Product

Current Regulators

Supply Voltage - Max

18 V

Supply Voltage - Min

6.5 V

Input Voltage Range

6.5 V to 18 V

Current page: 1 of 15
Download datasheet (2Mb)

The MAX17512 IC is a fully integrated valley current regu-

lator with a modified constant on-time control scheme

that emulates hysteretic-mode behavior for transients.

It integrates both the high-side and low-side switches

that are designed to deliver load currents up to 6A. The

device supports a 6.5V to 18V wide input voltage range.

The device accepts an external current-reference signal

(ICMD) and regulates the inductor current valley such that

it closely follows the reference signal. This allows dynamic

voltage scheduling and advanced power management,

reducing system power consumption. Example applica-

tions include envelope tracking in base stations, dynamic

voltage scheduling in industrial control, and lighting.

The device uses a modified constant on-time valley

current-mode control scheme to control the inductor

current and incorporates a high-performance PWM com-

parator with very low hysteresis and propagation delay.

The constant on-time is programmable using an exter-

nal resistor, allowing the user to set the desired ripple

current in the inductor. This architecture results in a very

accurate valley controlled current source whose ripple is

tightly controlled, thus making it suitable for high-speed

voltage/current-tracking systems.

The architecture of the device allows for simple imple-

mentation of multiple parallel modules by driving the

respective ICMD pin with the same external reference

current signal. An EN/UVLO input functions both as an on/

off pin as well as a UVLO monitor. The input supply start

voltage is externally programmable with a voltage-divider.

The device incorporates a linear regulator (V

ering the control (AVCC) and driver (PVCC) circuitry. The

device incorporates an active-high, open-drain FLT pin

that goes low when an overcurrent, UVLO, or overtem-

perature fault occurs.

The device is available in a compact, space-saving, 20-pin

(5mm x 5mm) TQFN package with an exposed pad.

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

Base-Station Envelope-Tracking Power Supplies

Precision Lighting

Industrial Control

High-Speed, Constant On-Time, Valley Current

�� Maxim Integrated Products 1

General Description

Regulator for Tracking Applications

Applications

) for pow-

S 6.5V to 18V Wide Input Voltage Range

S Delivers Currents Up to 6A

S Programmable Constant-On Control

S Current-Sense Accuracy > 95% at 5A

S High-Speed PWM Comparator

S Current-Loop Propagation Delay < 30ns

S Peak Efficiency > 88%

S FLT Power-OK (POK) Signal

S Undervoltage Lockout

S Overcurrent, Short-Circuit Protection

S Overtemperature Protection

S Space-Saving, 20-Pin (5mm x 5mm) TQFN Package

Ordering Information

For related parts and recommended products to use with this part,

refer to www.maxim-ic.com/MAX17512.related.

E V A L U A T I O N K I T A V A I L A B L E

appears at end of data sheet.

MAX17512

19-6160; Rev 0; 12/11

Features

Related parts for MAX17512ATP+

MAX17512ATP+ Summary of contents

... Figure 6. MAX17512 Typical Application Circuit (Envelope Tracking) Ordering Information PART TEMP RANGE MAX17512ATP+ -40NC to +125NC +Denotes a lead(Pb)-free/RoHS-compliant package. *EP = Exposed pad. �� Maxim Integrated Products 14 ...

Page 15

... Maxim reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits) shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 2011 Maxim Integrated Products © ...

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MAX17512ATP+ Maxim Integrated, MAX17512ATP+ Datasheet

MAX17512ATP+

Specifications of MAX17512ATP+

Related parts for MAX17512ATP+

MAX17512ATP+ Summary of contents

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