ADP1864 Analog Devices, ADP1864 Datasheet - Page 3

• Manufacturer Part Number: ADP1864
• Description: Constant Frequency Current-Mode Step-Down DC-to-DC Controller in TSOT
• Manufacturer: Analog Devices

SPECIFICATIONS
V
Table 1.
Parameter
POWER SUPPLY
ERROR AMPLIFIER
CURRENT SENSE
OUTPUT REGULATION
OSCILLATOR
GATE DRIVE
SOFT START POWER-ON TIME
1
2
Line regulation is measured using the application circuit in
the IN voltage.
Load regulation is measured using the application circuit in
COMP voltage. The COMP voltage range is typically 0.9 V to 2.3 V for the minimum to maximum load current condition.
IN
Input Voltage
Quiescent Current
Shutdown Supply Current
Undervoltage Lockout Threshold
FB Input Current
Amplifier Transconductance
COMP Startup Threshold
COMP Shutdown Threshold
COMP Start-Up Current Source
FB Regulation Voltage
Overvoltage Protection Threshold
Overvoltage Protection Hysteresis
Peak Current Sense Voltage
Current Sense Gain
Line Regulation
Load Regulation
Oscillator Frequency
FB Frequency Foldback Threshold
Gate Rise Time
Gate Fall Time
Minimum On Time
= 5 V, T
J
= 25°C, unless otherwise noted.
1
2
Symbol
V
I
I
V
I
V
Q
SD
FB
IN
UVLO
OVP
Figure 1
Figure 1
Conditions
V
V
V
V
V
V
V
V
V
COMP = GND
V
Measured at FB, T
T
V
V
V
V
V
V
C
C
PGATE minimum low duration
J
IN
IN
IN
IN
FB
FB
FB
IN
IN
IN
IN
CS
IN
FB
FB
FB
GATE
GATE
= −40°C to +125°C
. Line regulation is specified as the change in the FB voltage resulting from a 1 V change in
/V
. Load regulation is specified as the change in the FB voltage resulting from a 1 V change in the
= 3.15 V to 14 V, PGATE = IN
= 3.15 V to 14 V, COMP = GND
falling, T
rising, T
= 3.15 V to 14 V, T
= 3.15 V to 14 V, T
= 3.15 V to 14 V, T
= 3.15 V to 14 V, T
= 3.15 V to 14 V, V
= 0.8 V, T
= 0.8 V, T
= 0.8 V, I
to V
= 0.8 V, T
= 0 V
COMP
= 3 nF
= 3 nF
Rev. B | Page 3 of 16
COMP
J
J
COMP
= −40°C to +125°C
J
J
J
= −40°C to +125°C
= 25°C
= −40°C to +125°C
= −40°C to +125°C
= ±5 μA
J
= −40°C to +125°C
J
J
J
J
FB
= −40°C to +125°C
= −40°C to +125°C
= −40°C to +125°C
= −40°C to +125°C
/V
IN
Min
3.15
−20
−40
0.55
0.15
0.25
0.790
70
500
2.75
2.85
0.87
90
Typ
235
7
2.90
3.00
−2
−2
0.24
0.67
0.3
0.6
0.8
0.885
50
125
125
12
0.12
−2
580
190
0.35
50
40
190
1.1
Max
14
360
15
3.01
3.15
+20
+40
0.80
0.55
0.95
0.810
0.9
650
ADP1864
Unit
V
μA
V
V
nA
nA
mmho
V
V
μA
V
V
mV
mV
mV
V/V
mV/V
mV/V
kHz
kHz
ns
ns
ns
ms
μA
V