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参数资料
| 型号： | ADP2121-1.8-EVALZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 3/20页 |
| 文件大小： | 0K |
| 描述： | BOARD EVALUATION 1.8V ADP2121 |
| 标准包装： | 1 |
| 主要目的： | DC/DC，步降 |
| 输出及类型： | 1，非隔离 |
| 输出电压： | 1.8V |
| 电流 - 输出： | 600mA |
| 输入电压： | 2.3 ~ 5.5 V |
| 稳压器拓扑结构： | 降压 |
| 频率 - 开关： | 6MHz |
| 板类型： | 完全填充 |
| 已供物品： | 板 |
| 已用 IC / 零件： | ADP2121 |
ADP2121
SPECIFICATIONS
V IN = EN = 3.6 V; V OUT = 1.8 V, 1.82 V, 1.85 V, 1.875 V, and 2.3 V; typical values are at T A = 25°C; and minimum/maximum limits
guaranteed for T J = ?40°C to +125°C, 1 unless otherwise noted.
Table 2.
Parameters
Conditions
Min
Typ
Max
Unit
SUPPLY
Input Voltage Range
Quiescent Current
Shutdown Current
V OUT = 1.8 V, 1.82 V, 1.85 V, 1.875 V
V OUT = 2.3 V
Auto mode, no load, not switching, T A = ?40°C to 85°C
PWM mode, no load
V OUT = 1.8 V, 1.82 V, 1.85 V, 1.875 V, V EN = 0 V, T A = ?40°C to 85°C
V OUT = 2.3 V, V EN = 0 V, T A = ?40°C to 85°C
2.3
2.9
36
10
0.3
0.4
5.5
5.5
56
1
1.5
V
V
μA
mA
μA
μA
UNDERVOLTAGE LOCKOUT
Undervoltage Lockout Threshold
V OUT = 1.8 V, 1.82 V, 1.85 V, 1.875 V, V IN rising
V OUT = 1.8 V, 1.82 V, 1.85 V, 1.875 V, V IN falling
V OUT = 2.3 V, V IN rising
V OUT = 2.3 V, V IN falling
1.6
1.9
2.1
2.0
2.4
2.3
2.3
2.6
V
V
V
V
OUTPUT
Maximum Continuous Output Current 2
V OUT = 1.8 V, 1.82 V, 1.85 V, 1.875 V, V IN = 2.3 V
V OUT = 1.8 V, 1.82 V, 1.85 V, 1.875 V, V IN = 2.5 V
V OUT = 1.8 V, 1.82 V, 1.85 V, 1.875 V, V IN = 2.7 V to 5.5 V
V OUT = 2.3 V, V IN = 2.9 V to 5.5 V
300
500
600
600
mA
mA
mA
mA
Output Voltage Accuracy 3
Load Regulation 4
Auto mode, V IN = 3.6 V, T A = 25°C, no load, with respect to V OUT
PWM mode, V IN = 2.5 V to 4.5 V, no load, with respect to V OUT
PWM mode, I LOAD = 1 mA to 600 mA
?3
?3
?0.2
+3
+3
%
%
%/A
Feedback Bias Current
V OUT = 1.8 V, V FB = 1.8 V and V OUT = 1.82 V, V FB = 1.82 V
V OUT = 1.85, V FB = 1.85 V and V OUT = 1.875 V, V FB = 1.875 V
V OUT = 2.3 V, V FB = 2.3 V
3.8
4.1
6.4
8
8
8
μA
μA
μA
SWITCHING CHARACTERISTICS
SW On Resistance (R DSon )
SW Leakage Current
P-channel switch
N-channel synchronous rectifier
V IN = 5.5 V, V SW = 0 V and 5.5 V
220
260
440
550
5
mΩ
mΩ
μA
SW Current Limit
P-channel switch, open loop, T A = ?40°C to 125°C
790
1000
1222
mA
Oscillator Frequency
P-channel switch, open loop, T A = ?40°C to 85°C
828
5.36
1000
6
1222
6.64
mA
MHz
EN/MODE INPUT LOGIC
V IN = 2.3 V to 5.5 V
High Threshold Voltage
Low Threshold Voltage
1.3
0.4
V
V
Leakage Current
V IN = V EN = V MODE = 5.5 V
0.01
1
μA
SOFT START
Time from EN ≥ 1.2 V to stable V OUT
Soft Start Period 5
SHORT-CIRCUIT THRESHOLD
V OUT = 1.82 V, R LOAD = 5.1 Ω
V OUT = 1.8 V, 1.85 V, 1.875 V, R LOAD = 5.1 Ω
V OUT = 2.3 V, R LOAD = 5.1 Ω
275
75
100
1.24
310
85
115
μs
μs
μs
V
THERMAL SHUTDOWN
Thermal Shutdown Threshold
Thermal Shutdown Hysteresis
150
15
°C
°C
1
2
3
4
5
All limits at temperature extremes are guaranteed via correlation using standard statistical quality control (SQC); typical values are at T A = 25°C.
Guaranteed by design. The maximum output current guarantee for 2.3 V to 2.5 V increases linearly from 300 mA to 500 mA. The maximum output current guarantee for 2.5 V to
2.7 V increases linearly from 500 mA to 600 mA. For greater than 2.7 V, the maximum output current guarantee is 600 mA.
Transients not included in voltage accuracy specifications. For PFM mode, the VOUT accuracy specification is for the upper point of the ripple.
The load regulation typical value includes all voltage options. The typical value is different for each voltage option, but can be up to ?0.2%/A.
Typical value characterized on bench. Maximum specification guaranteed by design. C IN = 2.2 μF (GRM155R60J225M), L = 0.47 μH ( LQM2HPNR47MG0L), C OUT = 4.7 μF
( GRM155R60J475ME87D ).
Rev. B | Page 3 of 20
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