UC1846-SP_15 Datasheet, PDF (7/29 Pages) Texas Instruments – Current-Mode PWM Controller

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UC1846-SP
SLUS871C – JANUARY 2009 – REVISED OCTOBER 2015
6.5 Electrical Characteristics
V_IN = 15 V, R_T = 10 kΩ, C_T = 4.7 nF, T_A = T_J = –55°C to 125°C (unless otherwise noted)
PARAMETER
TEST CONDITIONS
REFERENCE
Output voltage
Line regulation
Load regulation
Temperature stability
Total output variation
Output noise voltage
Long-term stability
Short-circuit output current
OSCILLATOR
T_J = 25°C, I_O = 1 mA
V_IN = 8 to 40 V
I_L = 1 to 10 mA
Over operating range
Over line, load, and temperature⁽¹⁾
10 Hz ≤ ƒ ≤ 10 kHz, T_J = 25°C⁽¹⁾
T_J = 125°C, 1000 hr
V_REF = 0 V
Initial accuracy
Voltage stability
Temperature stability
T_J = 25°C
V_IN = 8 to 40 V
Over operating range
Sync output high level
Sync output low level
Sync input high level
Sync input low level
Sync input current
ERROR AMPLIFIER
C_T = 0 V
C_T = 0 V
Sync = 3.9 V, C_T = 0 V
Input offset voltage
Input bias current
Input offset current
Common mode range
Open-loop voltage gain
Unity-gain bandwidth
CMRR
PSRR
Output sink current
Output source current
High-level output voltage
Low-level output voltage
CURRENT SENSE AMPLIFIER
Amplifier gain
Maximum differential input signal
(V_C/S+ – V_C/S–)
Input offset voltage
CMRR
PSRR
Input bias current
Input offset current
Input common-mode range
Delay to outputs
CURRENT LIMIT ADJUST
Current limit offset
V_IN = 8 to 40 V
ΔV_O = 1.2 to 3 V, V_CM = 2 V
T_J = 25°C⁽¹⁾
V_CM = 0 to 38 V, V_IN = 40 V
V_IN = 8 to 40 V
V_ID = –15 mV to –5 V, Comp = 1.2 V
V_ID = 15 mV to 5 V, Comp = 2.5 V
R_L = (Comp) 15 kΩ
R_L = (Comp) 15 kΩ
V_C/S– = 0 V, C/L SS open⁽²⁾⁽³⁾
C/L SS open⁽²⁾, R_L (Comp)= 15 kΩ
V_{C/L SS} = 0.5 V, Comp open⁽²⁾
V_CM = 1 to 12 V
V_IN = 8 to 40 V
V_{C/L SS} = 0.5 V, Comp open⁽²⁾
V_{C/L SS} = 0.5 V, Comp open⁽²⁾
T_J = 25°C⁽¹⁾
V_C/S– = 0 V, V_C/S+ = 0 V, Comp open⁽²⁾
MIN TYP
MAX UNIT
5.04 5.10
5
3
0.4
5
100
5
–10 –45
5.16 V
20 mV
15 mV
mV/°C
5.2 V
μV
mV
mA
39
43
–1
–1
3.9 4.35
2.3
3.9
1.3
47 kHz
2%
%
V
2.5 V
V
2.5 V
1.5 mA
0.5
5 mV
-1 –0.6
μA
40
250 nA
0
V_IN – 2 V
80 105
dB
0.7
1
MHZ
75 100
dB
80 105
dB
2
6
mA
–0.5
-0.4 mA
4.3 4.6
V
0.7
1V
2.5 2.75
3.1 V/V
1.1 1.2
V
5
25 mV
60
83
dB
60
84
dB
-10 –2.5
μA
0.08
1 μA
V_IN – 3 V
200
500 ns
0.45 0.5
0.55 V
(1) Parameters ensured by design and/or characterization, if not production tested.
(2) Parameter measured at trip point of latch with V_E/A+ = V_REF, V_E/A– = 0 V.
(3) Amplifier gain defined as: G = ΔV_Comp/ΔV_C/S+; V_C/S+ = 0 to 1 V.
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