Electronic Components Datasheet Search
  British  ▼
ALLDATASHEET.CO.UK

X  

Preview PDF HTML

L6997STR Datasheet(PDF) 4 Page - STMicroelectronics

Part # L6997STR
Description  STEP DOWN CONTROLLER FOR LOW VOLTAGE OPERATIONS
PDF  30 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L6997STR Datasheet(HTML) 4 Page - STMicroelectronics

  L6997STR Datasheet HTML 1Page - STMicroelectronics L6997STR Datasheet HTML 2Page - STMicroelectronics L6997STR Datasheet HTML 3Page - STMicroelectronics L6997STR Datasheet HTML 4Page - STMicroelectronics L6997STR Datasheet HTML 5Page - STMicroelectronics L6997STR Datasheet HTML 6Page - STMicroelectronics L6997STR Datasheet HTML 7Page - STMicroelectronics L6997STR Datasheet HTML 8Page - STMicroelectronics L6997STR Datasheet HTML 9Page - STMicroelectronics Next Button
Zoom Inzoom in Zoom Outzoom out
 4 / 30 page
background image
L6997S
4/30
CURRENT LIMIT AND ZERO CURRENT COMPARATOR
ILIM
Input bias current
RILIM = 2KΩ to 200KΩ
4.655.4
µA
Zero Crossing Comparator offset
Phase-gnd
-2
2
mV
KILIM
Current limit factor
1.6
1.8
2
µA
ON TIME
Ton
On time duration
VREF=VSENSE OSC=125mV
720
800
880
ns
VREF=VSENSE OSC=250mV
370
420
470
ns
VREF=VSENSE OSC=500mV
200
230
260
ns
VREF=VSENSE OSC=1000mV
90
115
140
ns
OFF TIME
TOFFMIN
Minimum off time
600
ns
KOSC/TOFFMIN
OSC=250mV
0.20
0.40
VOLTAGE REFERENCE
VREF
Voltage Accuracy
0
µA < IREF < 100µA
0.594
0.6
0.606
V
PWM COMPARATOR
Input voltage offset
-2
+2
mV
IFB
Input Bias Current
20
nA
INTEGRATOR
Over Voltage Clamp
VSENSE = VCC
0.62
0.75
0.88
V
Under Voltage Clamp
VSENSE = GND
0.45
0.55
0.65
V
Integrator Input Offset Voltage
VSENSE-VREF
-4
-4
mV
IVSENSE
Input Bias Current
20
nA
GATE DRIVERS
High side rise time
VDR=3.3V; C=7nF
HGATE - PHASE from 1 to 3V
50
90
ns
High side fall time
50
100
ns
Low side rise time
VDR=3.3V; C=14nF
LGATE from 1 to 3V
50
90
ns
Low side fall time
50
90
ns
PGOOD UVP/OVP PROTECTIONS
OVP
Over voltage threshold
with respect to VREF
118
121
124
%
UVP
Under voltage threshold
67
70
73
%
Upper threshold
(VSENSE-VREF)
VSENSE rising
110
112
116
%
Lower threshold
(VSENSE-VREF)
VSENSE falling
858891
%
VPGOOD
ISink=2mA
0.2
0.4
V
Table 5. Electrical Characteristics (continued)
(VCC = VDR = 3.3V; Tamb = 0°C to 85°C unless otherwise specified)
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit



Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30


Datasheet Download

Go To PDF Page


Link URL



Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Contact us   |   Privacy Policy   |   Link to Datasheet    |   Link Exchange   |   Manufacturer List
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com