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参数资料
| 型号： | MAX1820XEUB+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 4/18页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK WCDMA 10-MSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 50 |
| 应用： | 转换器，WCDMA 功率放大器应用 |
| 输入电压： | 2.6 V ~ 5.5 V |
| 输出数： | 1 |
| 输出电压： | 0.4 V ~ 3.4 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-TFSOP，10-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 10-µMAX |
| 包装： | 管件 |
WCDMA Cellular Phone 600mA
Buck Regulators
ELECTRICAL CHARACTERISTICS
(V BATT = 3.6V, SHDN = BATT, SKIP = SYNC = GND, V REF = 1.25V (MAX1820 only), T A = -40°C to +85°C , unless otherwise noted.)
(Notes 2, 3)
PARAMETER
Input BATT Voltage
Undervoltage Lockout
Threshold
SYMBOL
V IN
V UVLO
CONDITIONS
V BATT rising, 1% hysteresis
MIN
2.6
2.15
MAX
5.5
2.55
UNITS
V
V
SKIP = GND (MAX1820Z, MAX1821)
300
Quiescent Current
I Q
SKIP = GND (MAX1820X, MAX1820Y, and
MAX1821X)
360
μA
SKIP = BATT, no switching
2000
Quiescent Current in Dropout
SKIP = GND
SKIP = BATT, no switching
1000
1000
μA
Shutdown Supply Current
I SHDN
SHDN = GND
6
μA
ERROR AMPLIFIER
OUT Voltage Accuracy
(MAX1820)
V OUT
V REF = 1.932 ±0.005V, load = 0 to 600mA,
SKIP = BATT or GND
V REF = 0.227 ±0.005V, load = 0 to 30mA,
SKIP = BATT, V BATT ≤ 4.2V
3.33
0.35
3.47
0.45
V
OUT Input Resistance
(MAX1820)
REF Input Current (MAX1820)
R OUT
I REF
250
1
k ?
μA
FB Voltage Accuracy
(MAX1821)
V FB
FB = COMP
1.225
1.275
V
FB Input Current (MAX1821)
Transconductance
COMP Clamp Low Voltage
COMP Clamp High Voltage
I FB
g m
V FB = 1.4V
30
0.2
2.04
50
85
1.0
2.28
nA
μS
V
V
CONTROLLER
P-Channel On-Resistance
N-Channel On-Resistance
Current-Sense Transresistance
P RDS
N RDS
R CS
I LX = 180mA, V BATT = 3.6V
I LX = 180mA, V BATT = 3.6V
0.25
0.3
0.35
0.75
?
?
V/A
P-Channel Current-Limit
Threshold
P-Channel Pulse-Skipping
Current Threshold
N-Channel Current-Limit
Threshold
Duty factor = 100%
SKIP = GND
SKIP = BATT
SKIP = GND
0.75
0.04
-1.6
0.01
1.55
0.24
-0.45
0.14
A
A
A
4
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