TK11850 データシートの表示（PDF） - Toko America Inc
部品番号
コンポーネント説明
メーカー
TK11850 Datasheet PDF : 14 Pages
| |||
TK11850L
ABSOLUTE MAXIMUM RATINGS
Supply Voltage ........................................................ 20 V
Switching Voltage .................................................... 20 V
Operating Voltage Range ............................... 2.3 to 10 V
Power Dissipation (Note 1) ................................. 400 mW
Storage Temperature Range ..................... -55 to +150 °C
Operating Temperature Range ..................... -30 to +85 °C
Switching Peak Current ....................................... 400 mA
Diode Current ........................................................ 10 mA
Maximum Frequency ...................................... ~ 800 kHz
TK11850 ELECTRICAL CHARACTERISTICS
Test Conditions: VIN = 3 V, VIS =VEN = VIN, VEXT = Open, VFB = GND, CX = 100 pF, TA = 25 °C, unless otherwise specified.
SYMBOL
PARAMETER
TEST CONDITIONS
MIN
OSCILLATOR SECTION (CX PIN)
I
C Charging Current
V = 0.1 V
16
CHG
X
CX
IDIS
CX Discharging Current
VCX = 1.0 V
35
IDIS / ICHG
Charge and Discharge
Current Ratio
VCX (HIGH) CX Threshold Voltage +
VCX at ICHG = 0mA
810
VCX (LOW) CX Threshold Voltage -
VCX at IDIS = 0mA
260
VOSC
CX Oscillation Voltage
(Vth +) - (Vth -)
520
CURRENT LIMITING COMPARATOR SECTION (IS PIN)
VLIMIT
Current Limit Sense
Voltage
VLIMIT = VIN - VIS
72
IIsIn
IS Pin Bias Current
VIN = VIS = 3 V
5
OUTPUT SWITCH SECTION (EXT PIN)
VSW, Sat
Output Transistor
Saturation Voltage
VCX = 0 V, ISW = 200 mA
I
SW, Off
Output Transistor Off
Leakage Current
V = 1 V, V = 20 V
FB
EXT
FEEDBACK COMPARATOR SECTION (VFB PIN)
VREF
Reference Voltage
0.505
IFBIn
VFB Pin Output Current
VFB = 0.4 V
-2
Note 1: Power dissipation is 400 mW when mounted. Derate at 3.2 mW / °C for operation above 25 °C.
TYP
22
49
2.2
860
300
560
77
10
0.2
0.01
0.525
-0.3
MAX UNITS
30
mA
65
mA
910 mV
340 mV
600 mV
82
mV
15
mA
0.4
V
2
mA
0.545 V
mA
Page 2
May 2001 TOKO, Inc.
Share Link: 