CA723 Datasheet, PDF (7/9 Pages) Intersil Corporation – Voltage Regulators Adjustable from 2V to 37V at Output Currents Up to 150mA without External Pass Transistors

CA723, CA723C
Typical Performance Curves (CA723 and CA723C) (Continued)
6
INPUT VOLTAGE (V_I)
4
4
2
2
0
OUTPUT VOLTAGE (V_O)
0
-2
INPUT VOLTAGE (V_I) = 12V
OUTPUT VOLTAGE (V_O) = 5V
-2
LOAD CURRENT (I_L) = 1mA
AMBIENT TEMPERATURE (T_A)
=
25^oC
-4
SHORT CIRCUIT PROTECTION RESISTANCE
-4 ^{(RSCP) = 0}
-6
-5
5
15
25
35
45
TIME (µs)
FIGURE 18. LOAD TRANSIENT RESPONSE
Typical Application Circuits
10 ₈
6
4
2
INPUT VOLTAGE (V_I) = 12V
OUTPUT VOLTAGE (V_O) = 5V
LOAD CURRENT (I_L) = 50mA
AMBIENT TEMPERATURE (T_A)
=
25^oC
SHORT CIRCUIT PROTECTION
1 ₈ ^{RESISTANCE (R}SCP^{) = 0}
6
1µF
4
LOAD CAPACITANCE (C_L) = 0
2
0.1
8
6
4
2
0.01
2
100
4 68 2 4 68 2 4 68 2
1k
10k
100k
FREQUENCY (Hz)
4 68
1M
FIGURE 19. OUTPUT IMPEDANCE vs FREQUENCY
V_I
V+ V_C
V_REF
V_O
R_SCP
R₁
NON
INV
INPUT
C_REF R₂
CURRENT
LIMIT
REGULATED
OUTPUT
CURRENT
SENSE
R₃
INV.
INPUT
C₁
100pF
V-
COMP
Circuit Performance Data:
Regulated Output Voltage 5V
Line Regulation (∆V_I= 3V) 0.5mV
Load Regulation (∆I_L = 50mA) 1.5mV
Note: R₃ = ^R1 ^R2 For Minimum Temperature Drift
R₁ + R₂
FIGURE 20. LOW VOLTAGE REGULATOR CIRCUIT
(V_O = 2V TO 7V)
V_I
V+ V_C
V_REF
V_O
R_SCP
R₃
NON
INV
INPUT _V-
CURRENT
LIMIT
CURRENT
SENSE
C₁
100pF
INV.
INPUT
COMP
REGULATED
OUTPUT 15V
R₁
R₂
Circuit Performance Data:
Line Regulation (∆V_I = 3V) 1.5mV
Load Regulation (∆I_L = 50mA) 4.5mV
Note: R₃ = ^R1 ^R2 For Minimum Temperature Drift
R₁ + R₂
R₃ May Be Eliminated For Minimum Component Count
FIGURE 21. HIGH VOLTAGE REGULATOR CIRCUIT
(V_O = 7V TO 37V)
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