ADP3178JR AD [Analog Devices], ADP3178JR Datasheet - Page 2

• Manufacturer Part Number: ADP3178JR
• Description: 4-Bit Programmable Synchronous Buck Controllers
• Manufacturer: AD [Analog Devices]

ADP3158/ADP3178–SPECIFICATIONS
Parameter
SWITCHING REGULATOR
VID INPUTS
OSCILLATOR
ERROR AMPLIFIER
CURRENT SENSE
OUTPUT DRIVERS
LINEAR REGULATORS
SUPPLY
NOTES
1
2
Specifications subject to change without notice.
All limits at temperature extremes are guaranteed via correlation using standard Statistical Quality Control (SQC).
Dynamic supply current is higher due to the gate charge being delivered to the external MOSFETs.
Output Accuracy
Line Regulation
Crowbar Trip Point
Crowbar Reset Point
Crowbar Response Time
Input Low Voltage
Input High Voltage
Input Current
Pull-Up Resistance
Internal Pull-Up Voltage
Off Time
CT Charge Current
Output Resistance
Transconductance
Output Current
Maximum Output Voltage
Output Disable Threshold
–3 dB Bandwidth
Threshold Voltage
Input Bias Current
Response Time
Output Resistance
Output Transition Time
Feedback Current
LR1 Feedback Voltage
LR2 Feedback Voltage
Driver Output Voltage
DC Supply Current
UVLO Threshold Voltage
UVLO Hysteresis
1.3 V Output
1.65 V Output
2.05 V Output
2
Symbol
V
V
t
V
V
I
R
I
R
g
I
V
V
BW
V
I
t
R
t
I
V
V
V
I
V
CROWBAR
VID
CT
O(ERR)
CS+
CS
R
FB(X)
CC
m(ERR)
V
CS–
CROWBAR
IL(VID)
IH(VID)
VID
O(ERR)
COMP(MAX)
COMP(OFF)
CS(TH)
O(DRV(X))
LRFB(1)
LRFB(2)
LRDRV(X)
UVLO
, t
OUT
ERR
, I
F
CS–
Conditions
Figure 1
Figure 1
Figure 1
VCC = 10 V to 14 V
% of Nominal DAC Voltage
% of Nominal DAC Voltage
Overvoltage to DRVL Going High
VID(X) = 0 V
T
T
T
CS– Forced to V
CS– Forced to V
COMP = Open
CS– Forced to V
CS–
0.8 V
CS+ = CS– = V
CS+ – (CS–)
Going Low
I
C
ADP3158, Figure 2,
VCC = 4.5 V to 12.6 V
ADP3178, Figure 2,
VCC = 4.5 V to 12.6 V
ADP3158, Figure 2,
VCC = 4.5 V to 12.6 V
ADP3178, Figure 2,
VCC = 4.5 V to 12.6 V
VCC = 4.5 V, V
L
A
A
A
L
= 50 mA
= 25 C, CT = 200 pF
= 25 C, V
= 25 C, V
= 3000 pF
0.45 V
COMP 1 V
OUT
OUT
87 mV to DRVH
OUT
LRFB(X)
OUT
OUT
OUT
(VCC = 12 V, T
in Regulation
= 0 V
– 3%
– 3%
– 3%
= 0 V
A
= 0 C to 70 C, unless otherwise noted.)
Min
1.289
1.637
2.034
115
40
2.0
20
5.0
3.5
130
25
2.05
600
69
35
2.44
0.97
1.75
0.97
4.2
6.75
0.8
Typ
1.3
1.65
2.05
0.06
120
50
400
185
30
5.4
4.0
150
35
1
2.2
625
3.0
750
500
78
45
1
0.5
50
6
80
0.3
2.5
1.0
1.8
1.0
7
7
1
Max
1.311
1.663
2.066
125
60
0.6
250
5.7
4.5
170
45
2.35
900
87
54
5
5
1
2.56
1.03
1.85
1.03
9
7.25
1.2
V
V
V
%
%
%
ns
V
V
k
V
M
V
mV
mV
mV
mV
V
V
V
V
V
mA
V
V
Unit
mmho
kHz
ns
ns
A
s
A
A
A
A
A