ADP3421JRU Analog Devices, ADP3421JRU Datasheet - Page 3

• Manufacturer Part Number: ADP3421JRU
• Description: Geyserville-Enabled DC-DC Converter Controller for Mobile CPUs
• Manufacturer: Analog Devices

Parameter
CURRENT LIMIT COMPARATOR
LINEAR REGULATOR SOFT-START TIMER
2.5 V CLK LDO CONTROLLER
1.5 V I/O LDO CONTROLLER
LEVEL TRANSLATOR
NOTES
1
2
3
4
5
6
7
8
9
Specifications subject to change without notice.
V
V
During latency time of VID code change, the Power Good output signal should not be considered valid.
Internal bias and soft start are not enabled unless the soft-start pin voltage first drops below the enable threshold.
Measured from 50% of VID code transient amplitude to the point where V
Guaranteed by characterization.
40 mV p-p amplitude impulse with 20 mV overdrive. Measure from the input threshold intercept point to 50% of the output voltage swing.
Measured between the 30% and 70% points of the output voltage swing.
The LTO output tied to V
CORE
CORE
Input Offset Voltage
Input Bias Current
Hysteresis Current
Hysteresis Setting Reference Voltage V
Propagation Delay Time
Charge Current
Discharge Current
Enable Threshold
Termination Threshold
Feedback Bias Current
Output Drive Current
DC Transconductance
Feedback Bias Current
Output Drive Current
DC Transconductance
Input Clamping Threshold
Output Voltage
Propagation Delay Time
ramps up monotonically.
ramps down monotonically.
CCLT
= 2.5 V rail through an R
6
6
Symbol
V
I
I
t
I
I
V
V
I
I
G
I
I
G
V
V
V
t
CL+
CL–
CLPD
LTPD
SSC(UP)
SSC(DN)
CLKFB
CLKDRV
IOFB
IODRV
CLOS
VHYS
SSCEN
SSCTH
LTIH
LTOH
LTOL
CLK
IO
7
LTO
4
= 150 Ω pull-up resistor.
Conditions
V
V
V
V
V
V
T
0°C ≤ T
V
V
V
V
V
∆I
V
V
V
∆I
I
I
V
LTI
LTI
CS–
CS+
CORE
REG
CS+
CS+
A
SSC
SSC
CLKFB
CLKDRV
CLKDRV
IOFB
IODRV
IODRV
LTI
R
R
R
R
R
R
CLKDRV
CLKDRV
= 25°C
IHYS
IHYS
IHYS
IHYS
IHYS
IHYS
= –10 µA
= –10 µA
DAC
= 0.175 V
= 1.3 V
= 1.3 V
= 1.28 V
= 1.32 V
= 0 V
= 1.7 V, V
= 1.28 V, V
= 1.5 V
= V
= 1.53 V
= 1.47 V
= 2.5 V
settles within ± 1% of its steady state value.
A
Open
= 170 kΩ
= 17 kΩ
Open
= 170 kΩ
= 17 kΩ
= 2.55 V
= 2.45 V
= 1 mA
= 1 mA
≤ 100°C
RAMP
9
9
UVLO
= 1.3 V
CS–
= 1.3 V
= 1.1 V
Min
–6
–5
–22
–265
–13
–175
1.53
–0.6
0.3
1.53
3
10
0.95
0.9 × V
CCLT
Typ
–30
–300
–20
–200
1.70
30
50
–1.0
1.0
150
1.70
12.5
500
7.5
650
Max
+6
+5
–5
–38
–335
–5
–27
–225
1.87
60
100
–1.4
400
1.87
25
1
20
15
1
60
1.5
V
375
10
CCLT
ADP3421
Unit
mV
µA
µA
µA
µA
µA
µA
µA
V
ns
ns
µA
mA
mV
V
µA
µA
mA
mA/V
µA
µA
mA
mA/V
V
V
mV
ns