L5970AD STMicroelectronics, L5970AD Datasheet - Page 3

• Manufacturer Part Number: L5970AD
• Description: IC REG SW 1.5A STEP DOWN 8-SOIC
• Manufacturer: STMicroelectronics
• Type: Step-Down (Buck)r

Specifications of L5970AD

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 1.24 ~ 35 V
• Current - Output: 1.5A
• Frequency - Switching: 500kHz
• Voltage - Input: 4.4 ~ 36 V
• Operating Temperature: -40°C ~ 150°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Power - Output: 750mW
• Output Voltage: 35 V
• Operating Temperature Range: - 40 C to + 150 C
• Mounting Style: SMD/SMT
• Low Dropout Operation: 100% DUTY CYCLE
• For Use With: 497-8849 - BOARD DEMO STW9N150 100W 3PHASE
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Table 5. Electrical Characteristics (T
Note: 1. Guaranteed by design
DYNAMIC CHARACTERISTICS
DC CHARACTERISTICS
INHIBIT
ERROR AMPLIFIER
SYNC FUNCTION
REFERENCE SECTION
Symbol
I
R
o source
I
I
qst-by
V
V
o sink
V
I
DSON
gm
V
qop
I
I
f
η
OH
CC
I
OL
s
q
b
l
5
Operating input voltage range
Mosfet on Resistance
Maximum limiting current
Switching frequency
Duty cycle
Voltage feedback
Efficiency
Total Operating Quiescent Current
Quiescent current
Total stand-by 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
High Input Voltage
Low Input Voltage
Slave Sink Current
Master Output Amplitude
Output Pulse Width
Reference Voltage
Line Regulation
Load Regulation
Short Circuit Current
Parameter
j
= 25°C, V
V
4.4V < V
V
Duty Cycle = 0; V
V
Device ON
Device OFF
VFB = 1V
VFB = 1.5V
V
V
R
I
V
V
V
V
V
I
no load, V
I
V
I
V
I
comp
source
REF
REF
REF
O
CC
inh
COMP
COMP
L
COMP
CC
CC
sync
sync
CC
CC
= ∞
= 5V, V
> 2.2V
= 4.4V to 36V
= 4.4V to 36V
= 4.4V to 36V
= 4.4V to 36V
= 4.4V to 36V
= 0 to 5mA
= 0mA
= 0 to 5mA
= -0.1mA to 0.1mA
= 0.74V
= 2.33V
= 3mA
CC
= 1.9V; V
= 1.9V; V
= 1.9V
CC
Test Condition
sync
= 12V, unless otherwise specified.)
CC
< 36V
= 12V
(1)
= 1.65V
FB
FB
FB
= 1V
= 1.5V
= 1.5V
1.220
3.234
Min.
0.11
0.21
2.75
0.20
200
4.4
2.2
3.5
2.5
3.2
50
10
0
1
0.250
1.235
Typ.
0.35
500
300
1.8
1.5
2.5
2.3
3.3
3.3
90
50
57
18
5
3
5
8
3.366
3.399
Max.
V
1.25
0.74
0.25
0.45
100
100
0.5
2.7
0.8
0.4
36
10
15
30
REF
7
4
L5970AD
Unit
KHz
mA
mA
mA
mS
mA
mA
mV
mV
mA
µA
µA
µA
dB
µs
%
%
Ω
V
A
V
V
V
V
V
V
V
V
V
V
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