參數(shù)資料
型號： ADP2121ACBZ-1.85R7
廠商： ANALOG DEVICES INC
元件分類： 穩(wěn)壓器
英文描述： 1.222 A SWITCHING REGULATOR, 6640 kHz SWITCHING FREQ-MAX, PBGA6
封裝： 1.17 MM HEIGHT, 0.40 MM PITCH, ROHS COMPLIANT, WLCSP-6
文件頁數(shù)： 14/20頁
文件大小： 1702K
代理商： ADP2121ACBZ-1.85R7
ADP2121
Rev. B | Page 3 of 20
SPECIFICATIONS
VIN = EN = 3.6 V; VOUT = 1.8 V, 1.82 V, 1.85 V, 1.875 V, and 2.3 V; typical values are at TA = 25°C; and minimum/maximum limits
guaranteed for TJ = 40°C to +125°C,1
Table 2.
unless otherwise noted.
Parameters
Conditions
Min
Typ
Max
Unit
SUPPLY
Input Voltage Range
VOUT = 1.8 V, 1.82 V, 1.85 V, 1.875 V
2.3
5.5
V
VOUT = 2.3 V
2.9
5.5
V
Quiescent Current
Auto mode, no load, not switching, TA = 40°C to 85°C
36
56
A
PWM mode, no load
10
mA
Shutdown Current
VOUT = 1.8 V, 1.82 V, 1.85 V, 1.875 V, VEN = 0 V, TA = 40°C to 85°C
0.3
1
A
VOUT = 2.3 V, VEN = 0 V, TA = 40°C to 85°C
0.4
1.5
A
UNDERVOLTAGE LOCKOUT
Undervoltage Lockout Threshold
VOUT = 1.8 V, 1.82 V, 1.85 V, 1.875 V, VIN rising
2.1
2.3
V
VOUT = 1.8 V, 1.82 V, 1.85 V, 1.875 V, VIN falling
1.6
2.0
V
VOUT = 2.3 V, VIN rising
2.4
2.6
V
VOUT = 2.3 V, VIN falling
1.9
2.3
V
OUTPUT
Maximum Continuous Output Current2
VOUT = 1.8 V, 1.82 V, 1.85 V, 1.875 V, VIN = 2.3 V
300
mA
VOUT = 1.8 V, 1.82 V, 1.85 V, 1.875 V, VIN = 2.5 V
500
mA
VOUT = 1.8 V, 1.82 V, 1.85 V, 1.875 V, VIN = 2.7 V to 5.5 V
600
mA
VOUT = 2.3 V, VIN = 2.9 V to 5.5 V
600
mA
Output Voltage Accuracy3
Auto mode, VIN = 3.6 V, TA = 25°C, no load, with respect to VOUT
3
+3
%
PWM mode, VIN = 2.5 V to 4.5 V, no load, with respect to VOUT
3
+3
%
Load Regulation4
PWM mode, ILOAD = 1 mA to 600 mA
0.2
%/A
Feedback Bias Current
VOUT = 1.8 V, VFB = 1.8 V and VOUT = 1.82 V, VFB = 1.82 V
3.8
8
A
VOUT = 1.85, VFB = 1.85 V and VOUT = 1.875 V, VFB = 1.875 V
4.1
8
A
VOUT = 2.3 V, VFB = 2.3 V
6.4
8
A
SWITCHING CHARACTERISTICS
P-channel switch
220
440
mΩ
N-channel synchronous rectifier
260
550
mΩ
SW Leakage Current
VIN = 5.5 V, VSW = 0 V and 5.5 V
5
A
SW Current Limit
P-channel switch, open loop, TA = 40°C to 125°C
790
1000
1222
mA
P-channel switch, open loop, TA = 40°C to 85°C
828
1000
1222
mA
Oscillator Frequency
5.36
6
6.64
MHz
EN/MODE INPUT LOGIC
VIN = 2.3 V to 5.5 V
High Threshold Voltage
1.3
V
Low Threshold Voltage
0.4
V
Leakage Current
VIN = VEN = VMODE = 5.5 V
0.01
1
A
SOFT START
Time from EN ≥ 1.2 V to stable VOUT
Soft Start Period5
VOUT = 1.82 V, RLOAD = 5.1 Ω
275
310
s
VOUT = 1.8 V, 1.85 V, 1.875 V, RLOAD = 5.1 Ω
75
85
s
VOUT = 2.3 V, RLOAD = 5.1 Ω
100
115
s
SHORT-CIRCUIT THRESHOLD
1.24
V
THERMAL SHUTDOWN
Thermal Shutdown Threshold
150
°C
Thermal Shutdown Hysteresis
15
°C
1 All limits at temperature extremes are guaranteed via correlation using standard statistical quality control (SQC); typical values are at T
A = 25°C.
2 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.
3 Transients not included in voltage accuracy specifications. For PFM mode, the VOUT accuracy specification is for the upper point of the ripple.
4 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.
5 Typical value characterized on bench. Maximum specification guaranteed by design.
CIN = 2.2 F (GRM155R60J225M), L = 0.47 H (LQM2HPNR47MG0L), COUT = 4.7 F
(
GRM155R60J475ME87D).
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