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参数资料
| 型号： | MAX5003ESE+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 6/16页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR FLYBK ISO VM 16SOIC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| PWM 型： | 电压模式 |
| 输出数： | 1 |
| 频率 - 最大： | 1.2MHz |
| 占空比： | 75% |
| 电源电压： | 11 V ~ 110 V |
| 降压： | 无 |
| 升压： | 无 |
| 回扫： | 是 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 是 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 16-SOIC（0.154"，3.90mm 宽） |
| 包装： | 带卷 (TR) |
High-Voltage PWM
Power-Supply Controller
Typical Operating Characteristics (continued)
(V DD = +12V, R FREQ = 200k ? , R MAXTON = 200k ? , T A = +25°C, unless otherwise noted.)
MAXIMUM FREQUENCY vs. INPUT VOLTAGE
10
9
V CC LOAD REGULATION
AND FET TOTAL GATE-SWITCHING CHARGE
350
8
7
6
5
4
300
250
200
150
10nC
20nC
25nC
30nC
3
100
15nC
2
1
0
V+ = V ES = 12V TO 36V
V DD = UNCONNECTED
50
0
0
5
10
15
20
12
13
14
15
16
I CC (mA)
V+ (V)
Pin Description
PIN
1
2
3
4
5
6
7
8
9
10
NAME
V+
INDIV
ES
FREQ
SS
REF
CON
COMP
FB
MAXTON
FUNCTION
Preregulator Input. Connect to the power line for use with 25V to 110V line voltages. Bypass V+ to ground
with a 0.1μF capacitor, close to the IC. Connects internally to the drain of a depletion FET preregulator.
Undervoltage Sensing and Feed-Forward Input. Connect to the center point of an external resistive divider
connected between the main power line and AGND. Undervoltage lockout takes over and shuts down
the controller when V INDIV < 1.2V. INDIV bias is typically 0.01μA.
Preregulator Output. When V+ ranges above 36V, bypass ES to AGND with a 0.1μF capacitor close to
the IC. When V+ is always below 36V, connect ES to V+.
Oscillator Frequency Adjust and Synchronization Input. In internal free-running mode, the voltage on this
pin is internally regulated to 1.25V. Connect a resistor between this pin and AGND to set the PWM fre-
quency. Drive between V IL and V IH at four times the desired frequency for external synchronization.
Soft-Start Capacitor Connection. Ramp time to full current limit is approximately 0.5ms/nF. Limits duty
cycle when V SS < V CON .
Reference Voltage Output (3.0V). Bypass to AGND with a 0.1μF capacitor.
Control Input of the PWM Comparator
Compensation Connection. Output of the error amplifier, available for compensation.
Feedback Input. Regulates to V FB = V REF / 2 = 1.5V.
Maximum On-Time Programming. A resistor from MAXTON to AGND sets the PWM gain and limits the
maximum duty cycle. The voltage on MAXTON tracks the voltage on the INDIV pin. Maximum on-time is
proportional to the value of the programming resistor. The maximum duty cycle is limited to 75%, regard-
less of the programming resistor.
6
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| MAX5005ACUB | 功能描述:低压差稳压器 - LDO 150mA USB LDO RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
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