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参数资料
| 型号： | MAX608ESA+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 6/12页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BST PWM 8-SOIC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 100 |
| PWM 型： | 控制器 |
| 输出数： | 1 |
| 频率 - 最大： | 300kHz |
| 占空比： | 85% |
| 电源电压： | 1.8 V ~ 16.5 V |
| 降压： | 无 |
| 升压： | 是 |
| 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： | 8-SOIC（0.154"，3.90mm 宽） |
| 包装： | 管件 |
| 产品目录页面： | 1408 (CN2011-ZH PDF) |
5V or Adjustable, Low-Voltage,
Step-Up DC-DC Controller
______________________________________________________________Pin Description
PIN
1
2
3
4
5
6
7
8
NAME
EXT
OUT
FB
SHDN
REF
AGND
GND
CS
FUNCTION
Gate Drive for External N-Channel Power Transistor
Power-Supply and Voltage-Sense Input. Always connect OUT to circuit output.
Feedback Input for Adjustable-Output Operation. Connect to ground for fixed-output operation.
Use a resistor divider network to adjust the output voltage. See Setting the Output Voltage section.
Active-High TTL/CMOS Logic-Level Shutdown Input. In shutdown mode, V OUT is a diode drop
below the input voltage (due to the DC path from the input voltage to the output). Connect to
ground for normal operation.
1.5V Reference Output that can source 100 μ A for external loads. Bypass to GND with 0.1 μ F.
The reference is disabled in shutdown.
Analog Ground
High-Current Ground Return for the Output Driver
Positive Input to the Current-Sense Amplifier. Connect the current-sense resistor between CS
and AGND.
REF
FB
DUAL-MODE
COMPARATOR
SHDN
MAX608
BIAS
50mV
CIRCUITRY
1.5V
REFERENCE
ERROR
COMPARATOR
LOW-VOLTAGE
MIN OFF-TIME
ONE-SHOT
START-UP
COMPARATOR
Q
TRIG
N
OUT
2.3 μ s
F/F
S
R
Q
MAX ON-TIME
ONE-SHOT
TRIG
Q
16 μ s
LOW-VOLTAGE
OSCILLATOR
CURRENT-SENSE
0.1V
2.5V
EXT
AMPLIFIER
CS
Figure 1. Functional Diagram
6
_______________________________________________________________________________________
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