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参数资料
| 型号： | MAX1790EUA+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 6/14页 |
| 文件大小： | 0K |
| 描述： | IC REG BOOST ADJ 0.8A 8UMAX |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 升压（升压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 2.6 V ~ 12 V |
| 输入电压： | 2.6 V ~ 5.5 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 640kHz, 1.22MHz |
| 电流 - 输出： | 1.2A |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 8-uMAX |
Low-Noise Step-Up DC-DC Converters
Typical Operating Characteristics (continued)
(Circuit of Figure 1, V IN = 3.3V, f OSC = 640kHz, T A = +25°C, unless otherwise noted.)
MAX8715
MAX8715 LOAD-TRANSIENT RESPONSE
PULSED LOAD-TRANSIENT RESPONSE
MAX1790 LOAD-TRANSIENT RESPONSE
200mA
CH1
0
10mA
R COMP = 82k Ω
C COMP = 750pF
C COMP2 = 10pF
1A
CH1
40mA
200mA
CH1
10mA
R COMP = 120k Ω
C COMP = 1200pF
C COMP2 = 56pF
CH2
CH2
CH2
CH3
CH3
CH3
500mA
40 μ s/div
CH1 = LOAD CURRENT, 200mA/div
CH2 = OUTPUT VOLTAGE, AC-COUPLED, 100mV/div
CH3 = INDUCTOR CURRENT, 500mA/div
V IN = 3.3V, V OUT = 9.0V
f OSC = 1.2MHz, L = 6.8 μ H, C OUT = 3 x 3.3 μ F
MAX1790 LOAD-TRANSIENT RESPONSE
10 μ s/div
CH1 = LOAD CURRENT, 1A/div
CH2 = OUTPUT VOLTAGE, AC-COUPLED, 100mV/div
CH3 = INDUCTOR CURRENT, 500mA/div
V IN = 3.3V, V OUT = 9.0V
f OSC = 1.2MHz, L = 6.8 μ H, C OUT = 3 x 3.3 μ F
MAX1790 STARTUP WAVEFORM
WITHOUT SOFT-START
100 μ s/div
CH1 = LOAD CURRENT, 100mA/div
CH2 = OUTPUT VOLTAGE, AC-COUPLED, 200mV/div
CH3 = INDUCTOR CURRENT, 1A/div
V IN = 3V
V OUT = 12V, f OSC = 640kHz, C OUT = 33 μ F + 0.1 μ F
STARTUP WAVEFORM
WITH SOFT-START
CH1
20mA
R COMP = 62k Ω
C COMP = 820pF
CH1
CH1
C COMP2 = 56pF
CH2
CH3
100 μ s/div
CH1 = LOAD CURRENT, 500mA/div
CH2 = OUTPUT VOLTAGE, AC-COUPLED, 200mV/div
CH3 = INDUCTOR CURRENT, 1A/div
V OUT = 5V, f OSC = 640kHz, C OUT = 47 μ F + 0.1 μ F
CH2
CH3
100 μ s/div
CH1 = SHDN, 5V/div
CH2 = OUTPUT VOLTAGE, 5V/div
CH3 = INDUCTOR CURRENT, 1A/div
V IN = 3.3V, V OUT = 12V, I OUT = 10mA, f OSC = 640kHz
NO SOFT-START CAPACITOR, C OUT = 33 μ F
CH2
CH3
1ms/div
CH1 = SHDN, 5V/div
CH2 = OUTPUT VOLTAGE, 5V/div
CH3 = INDUCTOR CURRENT, 200mA/div
V OUT = 12V, I OUT = 10mA, f OSC = 640kHz,
C SS = 0.027 μ F, C OUT = 33 μ F
6
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