Bay Linear, Inc
2478 Armstrong Street, Livermore, CA 94550 Tel: (925) 989-7144, Fax: (925) 940-9556
www.baylinear.com
B29150
Upper Threshold
Voltage
Device set for 5V (Note 9)
60
40
25
mV
Lower Threshold
Voltage
Device set for 5V (Note 9)
75
95
140
mV
Hysteresis
Device set for 5V (Note 9)
15
mV
ENABLE Input B29152/53
Input Logic Voltage
Low (OFF)
High (ON)
2.4
0.8
V
VEN = 26V
100
600
750
V
Enable Pin
Input Current
VEN = 0.8V
2.5
5
µA
Regulator Output
Current in Shutdown
(Note 10)
10
500
µA
NOTES:
The Bold specifications apply to the full operating temperature range.
Note 1: Maximum positive supply voltage of 60V must be of limited duration (<100msec) and duty cycle.) The maximum continuous supply voltage is 16V.
Note 2: Full load current (IFL) is defined as 1.5A for the B29150/51/52/53.
Note 3: Dropout voltage is defined as the input-to output differential when the output voltage drops to 99% of its nominal value with VOUT + 1V applied to VIN.
Note 4: VIN = VOUT (NOMINAL) +1V. For example, use VIN= 4.3V for a 3.3V regulator. Employ pulse-testing procedures to minimize temperature rise.
Note 5: Ground pin current is the regulator quiescent current. The total current drawn from the source is the sum of the load current to the ground current.
Note 6: Output voltage temperature coefficient is defined as the worst case voltage changed divided by the total temperature range.
Note 7: Thermal regulation is defined as the change in the output voltage at a time T after a change in power dissipation is applied, excluding load or line regulation
effects. Specifications are for a 200mA load pulse as VIN = 20V (a 4W pulse) for T = 10ms.
Note 8: VREF
≤ V
OUT
≤ (V
IN - 1), 2.3V
≤ V
IN
≤ 16V, 10mA < I
L
≤ I
FL, TJ
≤ T
JMAX
Note 9: Comparator threshold is expressed in terms of a voltage differential at the Adjust terminal below the nominal reference voltage measured 6V input. To express
these thresholds in terms of output voltage change, multiply the error amplifier gain = VOUT/VREF = (R1 + R2)/R2. For example, at a programmable output voltage of
5V, the Error output is guaranteed to go low when the output drops by 95mVx 5V/ 1.240V = 38mV. Threshold remains constant as a percent of VOUT as VOUT is varied,
with the dropout warning occurring at typically 5% below nominal, 7.7% guaranteed.
Note 10: VEN
≤ 0.8V and V
IN
≤ 16V, V
OUT = 0.
BLOCK DIAGRAM
Reference
Thermal
Shutdown
EN
IN
OUT
ADJ
GND
O.V
I
LIMIT
28V
R1*
R2*
1.180V
1.240V
+
+
--
FLAG
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