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参数资料
| 型号： | MAX1721EUT-T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 3/8页 |
| 文件大小： | 0K |
| 描述： | IC REG SWITCHED CAP INV SOT23-6 |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 切换式电容器（充电泵），反相 |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | -1.5 V ~ -5.5 V |
| 输入电压： | 1.5 V ~ 5.5 V |
| 频率 - 开关： | 60kHz ~ 200kHz |
| 电流 - 输出： | 25mA |
| 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： | SOT-23-6 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | SOT-6 |
SOT23, Switched-Capacitor
Voltage Inverters with Shutdown
ELECTRICAL CHARACTERISTICS
(V IN = +5V, SHDN = GND (MAX1719), SHDN = IN (MAX1720/MAX1721), C1 = C2 = 10μF (MAX1720), C1 = C2 = 1μF
(MAX1719/MAX1721), circuit of Figure 1, T A = -40°C to +85°C , unless otherwise noted.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Supply Voltage Range
Quiescent Current (Note 3)
Oscillator Frequency
V IN
I CC
f OSC
R L = 10k ?
MAX1720
MAX1719/MAX1721
MAX1720
MAX1719/MAX1721
MAX1720
MAX1719/MAX1721
1.5
1.6
6
60
5.5
5.5
100
750
21
200
V
μA
kHz
Voltage Conversion Efficiency
I OUT = 0
99
%
Output Resistance (Note 1)
Output Current
OUT to GND Shutdown
Resistance
SHDN/ SHDN Input Logic High
SHDN/ SHDN Input Logic Low
R O
I OUT
R O , SHDN
V IH
V IL
I OUT = 10mA
Continuous, long-term
SHDN = IN (MAX1719) , SHDN = GND
(MAX1720/MAX1721), OUT is internally
forced to GND in shutdown
+2.5V ≤ V IN ≤ +5.5V
V IN (MIN) ≤ V IN ≤ +2.5V
+2.5V ≤ V IN ≤ +5.5V
V IN (MIN) ≤ V IN ≤ +2.5V
2.1
V IN - 0.2
65
25
12
0.6
0.2
?
mA RMS
?
V
V
Note 1: Capacitor contribution (ESR component plus (1/f OSC ) · C) is approximately 20% of output impedance.
Note 2: All specifications from -40°C to +85°C are guaranteed by design, not production tested.
Note 3: The MAX1719/MAX1720/MAX1721 may draw high supply current during startup, up to the minimum operating supply voltage.
To guarantee proper startup, the input supply must be capable of delivering 90mA more than the maximum load current.
Typical Operating Characteristics
(Circuit of Figure 1, V IN = +5V, SHDN = GND (MAX1719), SHDN = IN (MAX1720/MAX1721), C1 = C2 = C3, T A = +25°C, unless other-
wise noted.)
0
OUTPUT VOLTAGE
vs. OUTPUT CURRENT
100
MAX1720
EFFICIENCY vs. OUTPUT CURRENT
100
MAX1719/MAX1721
EFFICIENCY vs. OUTPUT CURRENT
-1
V IN = +1.5V
V IN = +2V
90
80
V IN = +5V
90
80
V IN = +5V
70
70
-2
V IN = +3.3V
60
50
V IN = +1.5V
V IN = +2V
V IN = +3.3V
60
50
V IN = +1.5V
V IN = +2V
V IN = +3.3V
-3
-4
-5
V IN = +5V
40
30
20
10
0
40
30
20
10
0
0
5
10 15 20 25 30 35 40 45 50
0
5
10 15 20 25 30 35 40 45 50
0
5
10 15 20 25 30 35 40 45 50
OUTPUT CURRENT (mA)
OUTPUT CURRENT (mA)
OUTPUT CURRENT (mA)
_______________________________________________________________________________________
3
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