Datasheet > MAX1965TEEP-T

MAX1965TEEP-T

更新时间： 2024-09-25 20:58:59

品牌	Logo	应用领域
美信 - MAXIM		信息通信管理开关光电二极管
页数	文件大小	规格书
30页	460K
描述
Switching Controller, Current-mode, 0.05A, 240kHz Switching Freq-Max, BICMOS, PDSO20, 0.150 INCH, 0.025 INCH PITCH, QSOP-20

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MAX1965TEEP-T 技术参数

是否无铅：	含铅	是否Rohs认证：	不符合
生命周期：	Obsolete	零件包装代码：	QSOP
包装说明：	0.150 INCH, 0.025 INCH PITCH, QSOP-20	针数：	20
Reach Compliance Code：	not_compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.21
模拟集成电路 - 其他类型：	SWITCHING CONTROLLER	控制模式：	CURRENT-MODE
控制技术：	PULSE WIDTH MODULATION	最大输入电压：	28 V
最小输入电压：	4.5 V	标称输入电压：	12 V
JESD-30 代码：	R-PDSO-G20	JESD-609代码：	e0
长度：	8.65 mm	湿度敏感等级：	1
功能数量：	1	端子数量：	20
最高工作温度：	85 °C	最低工作温度：	-40 °C
最大输出电流：	0.05 A	封装主体材料：	PLASTIC/EPOXY
封装代码：	SSOP	封装形状：	RECTANGULAR
封装形式：	SMALL OUTLINE, SHRINK PITCH	峰值回流温度（摄氏度）：	245
认证状态：	Not Qualified	座面最大高度：	1.73 mm
表面贴装：	YES	切换器配置：	PUSH-PULL
最大切换频率：	240 kHz	技术：	BICMOS
温度等级：	INDUSTRIAL	端子面层：	Tin/Lead (Sn85Pb15)
端子形式：	GULL WING	端子节距：	0.635 mm
端子位置：	DUAL	处于峰值回流温度下的最长时间：	NOT SPECIFIED
宽度：	3.9 mm	Base Number Matches：	1

MAX1965TEEP-T 数据手册

19-2084; Rev 0; 7/01

Tracking/Sequencing Triple/Quintuple

Power-Supply Controllers

General Description

Features

The MAX1964/MAX1965 power-supply controllers are

designed to address cost-sensitive applications

demanding voltage sequencing/tracking, such as

cable modem consumer premise equipment (CPE),

xDSL CPE, and set-top boxes. Operating off a low-cost,

unregulated DC supply (such as a wall adapter output),

the MAX1964 generates three positive outputs and the

MAX1965 generates four positive outputs and one neg-

ative output to provide an inexpensive system power

supply.

ꢀ 4.5V to 28V Input Voltage Range

ꢀ Master DC-DC Step-Down Converter:

Preset 3.3V or Adjustable (1.236V to 0.75 x V )

Output Voltage

Fixed Frequency (200kHz) PWM Controller

No Current-Sense Resistor

Adjustable Current Limit

95% Efficient

Soft-Start

The MAX1964 includes a current-mode synchronous

step-down controller and two positive regulator gain

blocks. The MAX1965 has one additional positive gain

block and one negative regulator gain block. The main

synchronous step-down controller generates a high-

current output that is preset to 3.3V or adjustable from

ꢀ Two (MAX1964)/Four (MAX1965) Analog Gain

Blocks:

Positive Analog Blocks Drive Low-Cost PNP

Pass Transistors to Build Positive Linear

Regulators

Negative Analog Block (MAX1965) Drives a

Low-Cost NPN Pass Transistor to Build a

Negative Linear Regulator

1.236V to 0.75 ✕ V with an external resistive-divider.

The 200kHz operating frequency allows the use of low-

cost aluminum-electrolytic capacitors and low-cost

power magnetics. Additionally, the MAX1964/MAX1965

step-down controllers sense the voltage across the low-

side MOSFET’s on-resistance to efficiently provide the

current-limit signal, eliminating the need for costly cur-

rent-sense resistors.

ꢀ Power-Good Indicator

ꢀ Voltage Sequencing (MAX1964) or Tracking

(MAX1965)

Ordering Information

The MAX1964/MAX1965 generate additional supply

rails at low cost. The positive regulator gain blocks use

an external PNP pass transistor to generate low voltage

rails directly from the main step-down converter (such

as 2.5V or 1.8V from the main 3.3V output) or higher

voltages using coupled windings from the step-down

converter (such as 5V, 12V, or 15V). The MAX1965’s

negative gain block uses an external NPN pass transis-

tor in conjunction with a coupled winding to generate

-5V, -12V, or -15V.

TEMP.

PIN-

OSC

PART

RANGE

PACKAGE

(kHz)

-40°C to +85°C

MAX1964TEEE

MAX1965TEEP

16 QSOP

20 QSOP

200

Pin Configurations

All output voltages are externally adjustable, providing

maximum flexibility. During startup, the MAX1964 fea-

tures voltage sequencing and the MAX1965 features

voltage tracking. Both controllers provide a power-

good output that monitors all of the output voltages.

TOP VIEW

POK

COMP

OUT

16 IN

POK

COMP

OUT

20 IN

15 VL

14 BST

13 DH

12 LX

11 DL

10 GND

BST

Applications

xDSL, Cable, and ISDN Modems

MAX1964

MAX1965

FB2

Set-Top Boxes

GND

ILIM

Wireless Local Loop

FB3

ILIM

FB3

12 FB5

11 B5

16-Pin QSOP

FB4 10

Typical Operating Circuit appears at end of data sheet.

20-Pin QSOP

________________________________________________________________ Maxim Integrated Products

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

12 3 4 5 6 7...30

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与MAX1965TEEP-T相关器件

型号	品牌	获取价格	描述	数据表
MAX1966	MAXIM	获取价格	Low-Cost Voltage-Mode PWM Step-Down Controllers
MAX1966	ADI	获取价格	低成本、电压模式、PWM降压型控制器
MAX1966ESA	MAXIM	获取价格	Low-Cost Voltage-Mode PWM Step-Down Controllers
MAX1966ESA+	MAXIM	获取价格	Switching Controller, Voltage-mode, 1A, 127kHz Switching Freq-Max, BICMOS, PDSO8, 0.150 IN
MAX1966-MAX1967	MAXIM	获取价格	Low-Cost Voltage-Mode PWM Step-Down Controllers
MAX1967	ADI	获取价格	低成本、电压模式、PWM降压型控制器
MAX1967EUB	MAXIM	获取价格	Low-Cost Voltage-Mode PWM Step-Down Controllers
MAX1967EUB+	MAXIM	获取价格	Switching Controller, Voltage-mode, 1A, 127kHz Switching Freq-Max, BICMOS, PDSO10, MICRO M
MAX1967EUB+T	MAXIM	获取价格	Switching Controller, Voltage-mode, 1A, 127kHz Switching Freq-Max, BICMOS, PDSO10, MICRO M
MAX1967EUB-T	MAXIM	获取价格	Switching Controller, Voltage-mode, 1A, 127kHz Switching Freq-Max, BICMOS, PDSO10, MICRO M

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