L6997D Ver la hoja de datos (PDF) - STMicroelectronics
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L6997D Datasheet PDF : 23 Pages
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L6997
ABSOLUTE MAXIMUM RATINGS
Symbol
VCC
VDR
VPHASE
Parameter
VCC to GND
VDR to GND
HGATE and BOOT, to PHASE
HGATE and BOOT, to PGND
PHASE
LGATE to PGND
ILIM, VFB, VSENSE, NOSKIP, SHDN, PGOOD, OVP, VREF, INT,
GNDSENSE to GND
Ptot
Power dissipation at Tamb = 25°C
Tstg
Storage temperature range
THERMAL DATA
Symbol
Parameter
Rth j-amb Thermal Resistance Junction to Ambient
Tj Junction operating temperature range
Value
-0.3 to 6
-0.3 to 6
-0.3 to 6
-0.3 to 36
-0.3-to 30
-0.3 to VDR+0.3
-0.3 to VCC+0.3
1
-40 to 150
Value
125
-40 to 125
PIN CONNECTION (Top View)
NOSKIP
GNDSENSE
INT
VSENSE
VCC
GND
VREF
VFB
OSC
SS
1
20
2
19
3
18
4
17
5
16
6
15
7
14
8
13
9
12
10
11
TSSOP20
BOOT
HGATE
PHASE
VDR
LGATE
PGND
PGOOD
OVP
SHDN
ILIM
Unit
V
V
V
V
V
V
V
W
°C
Unit
°C/W
°C
PIN FUNCTION
N°
Name
Description
1
NOSKIP Connect to VCC to force continuous conduction mode and sink mode.
2
GNDSE Remote ground sensing pin
NSE
3
INT Integrator output. Short this pin to VFB pin and connect it via a capacitor to VOUT to insert the
integrator in the control loop. If the integrator is not used, short this pin to VREF.
4
VSENS This pin must be connected to the remote output voltage to detect overvoltage and undervoltage
E conditions and to provide integrator feedback input.
5
VCC IC Supply Voltage.
6
GND Signal ground
7
VREF 0.6V voltage reference. Connect max. a 10nF ceramic capacitor between this pin and ground.
This pin is capable to source or sink up to 250uA
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