L6712QTR STMicroelectronics, L6712QTR Datasheet - Page 3

• Manufacturer Part Number: L6712QTR
• Description: IC CTRLR DC/DC 2PH SYNC 36VFQFPN
• Manufacturer: STMicroelectronics
• Type: Step-Down (Buck)r

Specifications of L6712QTR

• Internal Switch(s): No
• Synchronous Rectifier: Yes
• Number Of Outputs: 2
• Voltage - Output: 0.9 ~ 3.3 V
• Current - Output: 2A
• Frequency - Switching: 150kHz
• Voltage - Input: 12V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 36-VFQFN, 36-VFQFPN
• Power - Output: 3.5W
• Operating Temperature Range: - 40 C to + 125 C
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-4219-2

Table 4. Electrical Characteristcs
(V
Figure 3. Pin Connection (Top view)
Vcc SUPPLY CURRENT
POWER-ON
OSCILLATOR AND INHIBIT
REF_IN/OUT
CC
PGNDS1
UGATE1
PHASE1
LGATE1
Symbol
DROOP
VCCDR
= 12V±10%, T
FAULT
BOOT1
I
∆Vosc
I
BOOTx
d
COMP
CCDR
f
SGND
ISEN1
VSEN
INH
I
OSC
MAX
CC
VCC
FB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
VCC supply current
VCCDR supply current
Boot supply current
Turn-On VCC threshold
Turn-Off VCC threshold
Turn-On VCCDR
Threshold
Turn-Off VCCDR
Threshold
Initial Accuracy
Inhibit threshold
Maximum duty cycle
Ramp Amplitude
Voltage at pin OSC
J
SO28
= 0°C to 70°C unless otherwise specified)
Parameter
28
27
26
25
24
23
22
21
20
19
18
17
16
15
PGND
LGATE2
PHASE2
UGATE2
BOOT2
PGOOD
VID2
VID1
VID0
FBR
FBG
OSC/INH/FAULT
ISEN2
PGNDS2
HGATEx and LGATEx open
VCCDR=BOOTx=12V
LGATEx open; VCCDR=12V
HGATEx open; PHASEx to
PGND; VCC=BOOTx=12V
VCC Rising; VCCDR=5V
VCC Falling; VCCDR=5V
VCCDR Rising
VCC=12V
VCCDR Falling
VCC=12V
OSC = OPEN
OSC = OPEN; Tj=0°C to 125°C
I
L6712, OSC = OPEN: I
OSC = OPEN; I
L6712A, OSC = OPEN
OVP Active
SINK
=5mA
Test Condition
PHASE2
PHASE2
UGATE2
PHASE1
PHASE1
UGATE1
LGATE2
LGATE2
LGATE1
LGATE1
VCCDR
VCCDR
PGND
PGND
PGND
PGND
DROOP
Corner Pin internally connected to the Exposed Pad.
28
28
29
29
30
30
31
31
32
32
33
33
34
34
35
35
36
36
=70µA
DROOP
27
27
1
1
26
26
2
2
=0
25
25
3
3
24
24
4
4
Min.
4.75
135
127
VFQFPN-36
1.5
8.2
6.5
7.5
0.5
4.2
4.0
0.5
72
30
85
23
23
5
5
22
22
6
6
Typ.
150
21
21
9.2
7.5
4.4
4.2
5.0
7
7
10
80
40
90
3
1
3
20
20
8
8
L6712A L6712
19
19
9
9
18
18
17
17
16
16
15
15
14
14
13
13
12
12
11
11
10
10
Max.
12.5
10.2
5.25
165
178
1.5
8.5
4.6
4.4
4
-
-
OSC
OSC
N.C.
N.C.
ISEN2
ISEN2
ISEN1
ISEN1
PGNDS2
PGNDS2
PGNDS1
PGNDS1
VSEN
VSEN
REF_IN/OUT
REF_IN/OUT
N.C.
N.C.
Unit
kHz
kHz
mA
mA
mA
%
%
%
V
V
V
V
V
V
V
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