A5974ADTR STMicroelectronics, A5974ADTR Datasheet - Page 8

• Manufacturer Part Number: A5974ADTR
• Description: IC REG SW STEP-DOWN 2A 8SOIC
• Manufacturer: STMicroelectronics
• Series: -r
• Type: Step-Down (Buck), PWMr

Specifications of A5974ADTR

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 1.235 V ~ 35 V
• Current - Output: 2A
• Frequency - Switching: 500kHz
• Voltage - Input: 4 V ~ 36 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (0.154", 3.90mm Width) Exposed Pad
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 497-11423-2

Electrical characteristics
3
8/49
Electrical characteristics
T
Table 4.
Dynamic characteristics (see test circuit)
DC characteristics
Inhibit
Error amplifier
Synch function
J
Symbol
R
I
o source
= -40 °C to 125 °C, V
I
I
V
DS(on)
qst-by
V
V
o sink
f
I
gm
V
SW
qop
I
I
I
CC
OH
OL
L
q
b
5
Operating input
voltage range
MOSFET on-
resistance
Maximum limiting
current
Switching frequency
Duty cycle
Voltage feedback
Total operating
quiescent current
Quiescent current
Total standby
quiescent current
INH threshold voltage
High level output
voltage
Low level output
voltage
Source output current
Sink output current
Source bias current
DC open loop gain
Transconductance
Electrical characteristics
Parameter
CC
= 12 V, unless otherwise specified.
Doc ID 018762 Rev 1
V
V
4.4 V < V
20 mA < I
Duty cycle = 0; V
V
V
V
Device ON
Device OFF
V
V
V
V
R
I
V
COMP
0
INH
CC
INH
FB
FB
COMP
COMP
COMP
L
CC
= 1.235 V; I
=
= 1 V
= 1.5 V
= 36 V;
= 5 V
> 2.2 V
> 2.2 V
∞
= -0.1 mA to 0.1 mA;
Test condition
= 1.9 V; V
= 1.9 V; V
= 1.9 V
CC
0
< 2 A
< 36 V,
0
= 2 A
FB
FB
FB
= 1.5 V
= 1 V
= 1.5 V
1.198
Min.
425
190
2.5
2.2
3.5
50
4
0
1
0.250
1.235
Typ.
500
300
3.0
1.5
2.3
2.5
50
50
65
5
1.272
Max.
575
100
100
100
0.5
3.5
2.7
0.8
0.4
36
7
4
A5974AD
Unit
kHz
mA
mA
mA
mS
µA
µA
µA
µA
dB
%
Ω
V
A
V
V
V
V
V