參數(shù)資料
型號： UC1902
廠商： Texas Instruments, Inc.
元件分類： DC/DC變換器
英文描述： RSO-S_D(Z) Series - Econoline Regulated DC-DC Converters; Input Voltage (Vdc): 48V; Output Voltage (Vdc): 15V; Power: 1W; 2:1 and 4:1 Wide Input Voltage Ranges; 1kVDC, 2kVD & 3kVDC Isolation; UL94V-0 Package Material; Continuous Short Circuit Protectionwith Current Foldback; Low Noise; No External Capacitor needed; Efficiency to 83%
中文描述： 負(fù)載共享控制器
文件頁數(shù)： 2/6頁
文件大?。?/td> 147K
代理商： UC1902
2
UC1902
UC2902
UC3902
CONNECTION DIAGRAM
DIL-8, SOIC-8 (Top View)
N, J and D Package
ELECTRICAL CHARACTERISTICS:
Unless otherwise specified, T
A
= –55°C to +125°C for UC1902, –40°C to+85°C for
UC2902, 0°C to 70°C for UC3902, VCC = 5V, R
ADJR
= 1k
, V
ADJ
= 5V, COMP = 5nF capacitor to GND, V
SHARE–
= 0V, T
A
= T
J
.
PARAMETERS
TEST CONDITIONS
Power Supply
Supply Current
SHARE+ = 1V, SENSE = 0V
VCC = 20V
Undervoltage Lockout
Startup Voltage
SHARE+ = 0.2V, SENSE = 0V, COMP = 1V
Hysteresis
SHARE+ = 0.2V, SENSE = 0V, COMP = 1V
Current Sense Amplifier
Input Offset Voltage
0.1V
≤
SHARE+
≤
1.1V
Gain SENSE to SHARE
0.1V
≤
SHARE+
≤
1.1V
Input Resistance
Share Drive Amplifier
SHARE+ High
VCC = 2.5V, SENSE = –50mV, I
SHARE+
= –1mA
VCC = 12V, SENSE = –250mV, I
SHARE+
= –1mA
VCC = 20V, SENSE = –250mV, I
SHARE+
= –1mA
SHARE+ Low
VCC = 2.5V, SENSE = +10mV, I
SHARE+
= –1mA
VCC = 12V, SENSE = +10mV, I
SHARE+
= –1mA
VCC = 20V, SENSE = +10mV, I
SHARE+
= –1mA
SHARE+ Output Voltage
Measures SHARE+, SENSE = 0mV, R
SHARE+
= 200
resistor
SHARE+ to GND
CMRR
0
≤
SHARE–
≤
1V , SENSE used as input to amplifier
Load Regulation
Load on SHARE+, –1mA
≤
I
LOAD
≤
–20mA, SENSE =
–25mV
Short Circuit Current
SHARE+ = 0V, SENSE = –25mV
Slew Rate
SENSE = +10mV to –90mV Step, 200
resistor SHARE+ to
GND
SENSE = –90mV to +10mV Step, 200
resistor SHARE+ to
GND
MIN
TYP
MAX
UNIT
4
6
6
mA
mA
10
2.3
60
2.5
100
2.7
140
V
mV
–2.5
–41
0.6
–0.5
–40
1
1.5
-39
1.5
mV
V/V
k
1.2
9.6
9.6
1.4
10
10
20
20
20
20
V
V
V
10.4
10.4
50
50
50
40
mV
mV
mV
mV
50
90
0
dB
mV
20
–85
0.16
–50
0.27
–20
0.37
mA
V/
μ
s
0.12
0.24
0.34
V/
μ
s
Supply Voltage (ADJ and VCC) . . . . . . . . . . . . . . –0.3V to 20V
SENSE Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . –5V to +5V
ADJR, COMP Voltage. . . . . . . . . . . . . . . . . . . . . . –0.3V to +4V
SHARE–, SHARE+ Voltages . . . . . . . . . . . . . . . . –0.3V to 10V
SHARE+ Current . . . . . . . . . . . . . . . . . . . . . –100mA to +10mA
ADJ Current . . . . . . . . . . . . . . . . . . . . . . . . . . . –1mA to +30mA
Storage Temperature . . . . . . . . . . . . . . . . . . . –65°C to +150°C
Junction Temperature. . . . . . . . . . . . . . . . . . . –55°C to +150°C
Lead Temperature (Soldering, 10sec.) . . . . . . . . . . . . . +300°C
All voltages are with respect to pin 1. Currents are positive into,
negative out of the specified terminal. Consult Packaging Sec-
tion of the Databook for thermal limitations and considerations
of packages.
ABSOLUTE MAXIMUM RATINGS
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