ADP2121 Analog Devices, ADP2121 Datasheet - Page 3

• Manufacturer Part Number: ADP2121
• Description: 600 mA, 6 MHz Synchronous Step-Down DC-to-DC Converter
• Manufacturer: Analog Devices

SPECIFICATIONS
V
guaranteed for T
Table 2.
Parameters
SUPPLY
UNDERVOLTAGE LOCKOUT
OUTPUT
SWITCHING CHARACTERISTICS
EN/MODE INPUT LOGIC
SOFT START
SHORT-CIRCUIT THRESHOLD
THERMAL SHUTDOWN
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
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
Transients not included in voltage accuracy specifications. For PFM mode, the VOUT accuracy specification is for the upper point of the ripple.
Typical value characterized on bench. Maximum specification guaranteed by design.
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.
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.
(GRM155R60J475ME87D).
IN
Input Voltage Range
Quiescent Current
Shutdown Current
Undervoltage Lockout Threshold
Maximum Continuous Output Current
Output Voltage Accuracy
Feedback Bias Current
SW On Resistance (R
SW Leakage Current
SW Current Limit
Oscillator Frequency
High Threshold Voltage
Low Threshold Voltage
Leakage Current
Soft Start Period
Thermal Shutdown Threshold
Thermal Shutdown Hysteresis
Load Regulation
= EN = 3.6 V; V
J
= −40°C to +125°C,
5
4
OUT
DSon
= 1.8 V, 1.82 V, 1.85 V, 1.875 V, and 2.3 V; typical values are at T
)
3
1
2
unless otherwise noted.
Conditions
V
V
Auto mode, no load, not switching, T
PWM mode, no load
V
V
V
V
V
V
V
V
V
V
Auto mode, V
PWM mode, V
PWM mode, I
V
V
V
P-channel switch
N-channel synchronous rectifier
V
P-channel switch, open loop, T
P-channel switch, open loop, T
V
V
Time from EN ≥ 1.2 V to stable V
V
V
V
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
IN
IN
IN
OUT
OUT
OUT
= 5.5 V, V
= 2.3 V to 5.5 V
= V
= 1.8 V, 1.82 V, 1.85 V, 1.875 V, V
= 1.8 V, 1.82 V, 1.85 V, 1.875 V
= 2.3 V
= 2.3 V, V
= 1.8 V, 1.82 V, 1.85 V, 1.875 V, V
= 1.8 V, 1.82 V, 1.85 V, 1.875 V, V
= 2.3 V, V
= 2.3 V, V
= 1.8 V, 1.82 V, 1.85 V, 1.875 V, V
= 1.8 V, 1.82 V, 1.85 V, 1.875 V, V
= 1.8 V, 1.82 V, 1.85 V, 1.875 V, V
= 2.3 V, V
= 1.8 V, V
= 1.85, V
= 2.3 V, V
= 1.82 V, R
= 1.8 V, 1.85 V, 1.875 V, R
= 2.3 V, R
EN
= V
MODE
SW
FB
LOAD
LOAD
EN
IN
IN
IN
IN
FB
FB
IN
= 0 V and 5.5 V
LOAD
= 1.85 V and V
rising
falling
= 2.9 V to 5.5 V
= 3.6 V, T
= 1.8 V and V
= 2.3 V
= 0 V, T
= 2.5 V to 4.5 V, no load, with respect to V
= 5.5 V
= 1 mA to 600 mA
= 5.1 Ω
= 5.1 Ω
Rev. B | Page 3 of 20
A
= −40°C to 85°C
A
C
= 25°C, no load, with respect to V
IN
= 2.2 µF (GRM155R60J225M), L = 0.47 µH (LQM2HPNR47MG0L), C
OUT
LOAD
OUT
A
A
= 1.82 V, V
= −40°C to 125°C
= −40°C to 85°C
OUT
= 1.875 V, V
= 5.1 Ω
EN
= 0 V, T
IN
IN
IN
IN
IN
A
rising
falling
= 2.3 V
= 2.5 V
= 2.7 V to 5.5 V
= −40°C to 85°C
FB
A
= −40°C to 85°C
FB
= 1.82 V
= 1.875 V
A
= 25°C; and minimum/maximum limits
OUT
OUT
A
= 25°C.
Min
2.3
2.9
1.6
1.9
300
500
600
600
−3
−3
790
828
5.36
1.3
Typ
36
10
0.3
0.4
2.1
2.0
2.4
2.3
3.8
4.1
6.4
220
260
1000
1000
6
0.01
275
75
100
1.24
150
15
−0.2
OUT
Max
5.5
5.5
56
1
1.5
2.3
2.6
+3
+3
8
8
8
440
550
5
1222
1222
6.64
0.4
1
310
85
115
ADP2121
= 4.7 µF
Unit
V
V
µA
mA
µA
µA
V
V
V
V
mA
mA
mA
mA
%
%
%/A
µA
µA
µA
mΩ
mΩ
µA
mA
mA
MHz
V
V
µA
µs
µs
µs
V
°C
°C