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参数资料
| 型号： | MAX1636EAP+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 10/23页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM CM 20-SSOP |
| 标准包装： | 2,000 |
| PWM 型： | 电流模式，混合 |
| 输出数： | 1 |
| 频率 - 最大： | 330kHz |
| 占空比： | 99% |
| 电源电压： | 3.15 V ~ 30 V |
| 降压： | 是 |
| 升压： | 无 |
| 回扫： | 无 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 20-SSOP（0.209"，5.30mm 宽） |
| 包装： | 带卷 (TR) |
Low-Voltage, Precision Step-Down
Controller for Portable CPU Power
Table 2. Component Suppliers
POWER INPUT
0.1 μ F
COMPANY
AVX
FACTORY FAX
(COUNTRY CODE)
(1) 803-626-3123
USA PHONE
(803) 946-0690
SHDN
V+
OVP
SYNC
VL
V CC
4.7 μ F
C1
Central
Semiconductor
Coilcraft
(1) 516-435-1824
(1) 847-639-1469
(516) 435-1110
(847) 639-6400
1nF
Coiltronics
(1) 561-241-9339
(561) 241-7876
CC
MAX1636
BST
CMPSH-3
Dale
(1) 605-665-1627
(605) 668-4131
1 μ F
REF
GND
DH
LX
0.1 μ F
Q1
L1
R1
OUTPUT
Fairchild
International
Rectifier (IR)
(1) 408-721-1635
(1) 310-322-3332
(408) 721-2181
(310) 322-3331
DL
Q2
*
C2
IRC
(1) 512-992-3377
(512) 992-7900
10k
V CC
GND
PGND
CSH
CSL
R2
IRC
Marcon/United
Chemi-Con
Matsuo
Motorola
Panasonic
(1) 847-696-9278
(1) 512-992-3377
(1) 714-960-6492
(1) 602-994-6430
(1) 714-373-7183
(847) 696-2000
(512) 992-7900
(714) 969-2491
(602) 303-5454
(714) 373-7939
RESET
SKIP
FB
R3
Sanyo
Siliconix
Sprague
(81) 7-2070-1174
(1) 408-970-3950
(1) 603-224-1430
(619) 661-6835
(408) 988-8000
(603) 224-1961
Sumida
(81) 3-3607-5144
(847) 956-0666
*SEE RECTIFIER CLAMP DIODE SECTION
TDK
Tokin
(1) 847-390-4428
(1) 408-434-0375
(847) 390-4373
(408) 432-8020
Figure 1. Standard Application Circuit
Detailed Description
The MAX1636 is a BiCMOS, switch-mode, power-sup-
ply controller designed primarily for buck-topology reg-
ulators in battery-powered applications where high
efficiency and low quiescent supply current are critical.
Light-load efficiency is enhanced by automatic Idle
Mode operation, a variable-frequency, pulse-skipping
mode that reduces transition and gate-charge losses.
The step-down, power-switching circuit consists of two
N-channel MOSFETs, a rectifier, and an LC output filter.
The output voltage is the average AC voltage at the
switching node, which is regulated by changing the
duty cycle of the MOSFET switches. The gate-drive sig-
nal to the N-channel high-side MOSFET, which must
exceed the battery voltage, is provided by a flying-
capacitor boost circuit that uses a 100nF capacitor
between BST and LX. The MAX1636 contains 10 major
circuit blocks (Figure 2).
Dual Mode is a trademark of Maxim Integrated Products.
The pulse-width-modulation (PWM) controller consists
of a Dual Mode? feedback network and multiplexer, a
multi-input PWM comparator, high-side and low-side
gate drivers, and logic. The MAX1636 contains fault-
protection circuits that monitor the PWM output for
undervoltage and overvoltage. Bias generator blocks
include the 5V (VL) linear regulator and the 1.1V preci-
sion reference. The PWM uses a 200kHz/300kHz syn-
chronizable oscillator. The circuit blocks are powered
from an internal IC power rail that receives power from
either VL or V CC . The synchronous-switch gate driver is
powered directly from VL, while the high-side-switch
gate driver is powered indirectly from VL via an external
diode-capacitor boost circuit.
10
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相关代理商/技术参数 |
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|---|---|
| MAX1637EEE | 功能描述:DC/DC 开关控制器 RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| MAX1637EEE+ | 功能描述:DC/DC 开关控制器 Mini Precision Step Down RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| MAX1637EEE+T | 功能描述:DC/DC 开关控制器 Mini Precision Step Down RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| MAX1637EEE-T | 功能描述:DC/DC 开关控制器 RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| MAX1637EVKIT | 制造商:Maxim Integrated Products 功能描述:MINIATURE, LOW-VOLTAGE, PRECISION STEP-DOWN C - Bulk |
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