ISL75051SRH Datasheet, PDF (6/15 Pages) Intersil Corporation – 3A, Rad Hard, Positive, Ultra Low Dropout Regulator

ISL75051SRH
Electrical Specifications Unless otherwise noted, all parameters are guaranteed over the following specified conditions:
V_IN = V_OUT + 0.4V, V_OUT = 1.8V, C_IN = C_OUT = 220µF 25mΩ and 0.1µF X7R, T_J = +25°C, I_L = 0A. Applications must follow thermal guidelines of
the package to determine worst-case junction temperature. Please refer to “Applications Information” on page 11 of the datasheet and
Tech Brief TB379. Boldface limits apply over the operating temperature range, -55°C to +125°C. Pulse load techniques used by ATE to ensure
T_J = T_A defines guaranteed limits. (Continued)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
MAX
(Note 8)
TYP
(Note 8) UNITS
Feedback Input Current
Ground Pin Current
Ground Pin Current
Ground Pin Current
Ground Pin Current
Ground Pin Current in Shutdown
Dropout Voltage
Dropout Voltage
Dropout Voltage
Output Short Circuit Current
Output Short Circuit Current
Output Short Circuit Current
Output Short Circuit Current
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
(Rising Threshold)
I_Q
I_Q
I_Q
I_Q
I_SHDN
V_DO
V_DO
V_DO
ISCL
ISCL
ISCH
ISCH
TSD
TSDn
V_ADJ = 0.5V
V_OUT = 1.5V; I_LOAD = 0A, V_IN = 2.2V
V_OUT = 5.0V; I_LOAD = 0A, V_IN = 6.0V
V_OUT = 1.5V; I_LOAD = 3.0A, V_IN = 2.2V
V_OUT = 5.0V; I_LOAD = 3.0A, V_IN = 6.0V
ENABLE Pin = 0V, V_IN = 6.0V
I_LOAD = 1.0A, V_OUT = 2.5V (Note 10)
I_LOAD = 2.0A, V_OUT = 2.5V (Note 10)
I_LOAD = 3.0A, V_OUT = 2.5V (Note 10)
V_OUT = 0V, V_IN = 2.2V, R_SET = 5.11k
V_OUT = 0V, V_IN = 6.0V, R_SET = 5.11k
V_OUT = 0V, V_IN = 2.2V, R_SET = 511Ω
V_OUT = 0V, V_IN = 6.0V, R_SET = 511Ω
V_OUT + 0.4V < V_IN < 6.0V
V_OUT + 0.4V < V_IN < 6.0V
1
µA
11
12
mA
16
18
mA
11
13
mA
16
18
mA
1
10
µA
65
100
mV
140
200
mV
225
300
mV
1.1
A
1.2
A
5.7
A
6.2
A
175
°C
25
°C
AC CHARACTERISTICS
Input Supply Ripple Rejection
PSRR V_P-P = 300mV, f = 1kHz, I_LOAD = 3A; V_IN = 2.5V,
42
66
V_OUT = 1.8V
Input Supply Ripple Rejection
PSRR V_P-P = 300mV, f = 100kHz, I_LOAD = 3A; V_IN = 2.5V,
30
V_OUT = 1.8V
Phase Margin
PM
V_OUT = 1.8V, C_L = 220µF Tantalum
70
Gain Margin
GM
V_OUT = 1.8V, C_L = 220µF Tantalum
16
Output Noise Voltage
I_LOAD = 10mA, BW = 300Hz < f < 300kHz, BYPASS
100
to GND capacitor = 0.2µF
dB
dB
dB
dB
µV_RMS
DEVICE START-UP CHARACTERISTICS: ENABLE PIN
Rising Threshold
2.2V < V_IN < 6.0V
0.6
0.9
1.2
V
Falling Threshold
2.2V < V_IN < 6.0V
0.47
0.7
0.9
V
Enable Pin Leakage Current
V_IN = 6.0V, EN = 6.0V
1
µA
Enable Pin Propagation Delay
V_IN = 2.2V, EN rise to I_OUT rise
225
300
450
µs
Enable Pin Turn-on Delay
V_IN = 2.2V, V_OUT = 1.8V, I_LOAD = 1A, C_OUT = 220µF,
6
ms
C_BYP = 0.2µF
Enable Pin Turn-on Delay
V_IN = 2.2V, V_OUT=1.8V, I_LOAD = 1A, C_OUT = 47µF,
50
µs
C_BYP = 0.2µF
Hysteresis
Must be independent of V_IN; 2.2V < V_IN < 6.0V
90
200
318
mV
DEVICE START-UP CHARACTERISTICS: PG PIN
V_OUT Error Flag Rising Threshold
V_OUT Error Flag Falling Threshold
V_OUT Error Flag Hysteresis
2.2V < VIN < 6.0V
2.2V < VIN < 6.0V
2.2V < VIN < 6.0V
85
90
96
%
82
88
93
%
2.5
3.2
4.0
%V_OUT
6
FN7610.1
November 4, 2011