st1845rkg STMicroelectronics, st1845rkg Datasheet - Page 10

• Manufacturer Part Number: st1845rkg
• Description: Rad-tolerant Current Mode Pwm Controller
• Manufacturer: STMicroelectronics

Radiation characteristics
6.1.2
Table 7.
10/25
Reference section
Oscillator section
Error amp section
IO_SOURCE Output source current
ΔV
ΔV
Δ
IO_SINK
IDISCHG
Symbol
F
REF_LOAD
PSRR
REF_LINE
AVOL
V
OSC
F
V
V
I
OSC
REF
SC
I
V
OH
b
OL
2
/
Δ
V
Electrical measurements for total dose radiation testing
Prior to irradiation testing the devices shall have successfully met room temperature
electrical measurements specified herein.
Unless otherwise stated the measurements shall be performed at T
The test methods and test conditions shall be as per the corresponding test defined in
electrical measurements at room temperature. The parameters to be measured during and
on completion of irradiation testing are shown below.
Electrical parameter during irradiation testing
Power supply rejection ratio 12V ≤ V
Output voltage for ST1843
Output voltage for ST1845
Line regulation
Load regulation
Output short circuit current
Frequency
Frequency change with
voltage
Discharge current
I
I
Input bias current ST1843
Input bias current ST1845
AVOL for ST1843
AVOL for ST1845
nput voltage for ST1843
nput voltage for ST1845
Output sink current
VOUT high
VOUT low
Parameter
V
12V ≤ V
V
1 ≤ I
V
12V ≤ V
V
V
V
V
4V
V
2.7V; VPIN1 = 1.1V
V
2.3V; VPIN1 = 5V
V
2.3V; RL = 15K to GND
V
2.3V; R
V
I
I
I
I
I
I
I
I
I
I
I
I
Doc ID 019049 Rev 1
= 15V; R
= 15V; R
= 15V; R
= 15V; R
= 15V; R
= 15V; R
= 15V; R
= 15V; R
= 15V; R
= 15V; R
= 15V; R
= 15V; R
o
≤ 20mA
L
i
i
i
≤ 25V, R
≤ 25V, R
≤ 25V, R
= 15kΩ to pin
T
T
T
T
T
T
T
T
T
T
T
T
= 10kΩ; C
= 10kΩ; C
= 10kΩ; C
= 10kΩ; C
= 10kΩ; C
= 10kΩ; C
= 10kΩ; C
= 10kΩ; C
= 10kΩ; C
= 10kΩ; C
= 10kΩ; C
= 10kΩ; C
Test conditions
T
T
T
= 10kΩ; C
= 10kΩ; C
= 10kΩ; C
T
T
T
T
T
T
T
T
T
T
T
T
= 3.3nF
= 3.3nF, I
= 3.3nF,
= 3.3nF
= 3.3nF
= 3.3nF
= 3.3nF
= 3.3nF
= 3.3nF
= 3.3nF
= 3.3nF
= 3.3nF
T
T
T
= 3.3nF
= 3.3nF
= 3.3nF
; VPIN1 = 2.5V
; V
;
;
;
;
;
;
V
2V ≤ V
VPIN2 =
VPIN2 =
VPIN2 =
VPIN2 =
o
OSC
FB
= 1mA
= 5V
= 2V
o
≤
A
= +22 ± 3 °C
0.0078 0.0088
-2.75
Min.
4.95
4.85
-0.18
2.45
2.45
-2.8
60
62
60
49
-1
2
5
ST1843 - ST1845
Values
0.025
Max.
5.15
5.15
-0.03
2.55
0.02
-0.5
2.6
1.1
65
1
Unit
kHz
mA
mA
%
µA
dB
dB
V
V
V
A
V
V
A
V