PM6681A STMicroelectronics, PM6681A Datasheet - Page 11

• Manufacturer Part Number: PM6681A
• Description: Dual synchronous step down controller with adjustable LDO
• Manufacturer: STMicroelectronics

PM6681A
Table 6.
On time pulse width
OFF time
Voltage reference
Integrator
Line regulation
LDO5 linear regulator
LDO linear regulator
T
Symbol
COMP
COMP
V
ULVO
OFFMIN
I
V
V
LDO5
Ton
LDO5
FB
FB
REF
LDO
Electrical characteristics
(V
On time duration_
@VIN = 24 V
Minimum off time
@VIN = 24 V
Voltage accuracy
Load regulation
Undervoltage lockout fault
threshold
Voltage accuracy
Input bias current
Over voltage clamp
Under voltage clamp
LDO5 linear output voltage
LDO5 line regulation
LDO5 current limit
Under voltage lockout of
LDO5
LDO linear output voltage
IN
= 24 V; T
Parameter
J
= 25 °C, unless otherwise specified) (continued)
FSEL to GND
OUT1 = 3.3 V
OUT2 = 1.8 V
FSEL to VREF
OUT1 = 3.3 V
OUT2 = 1.8 V
FSEL to LDO5
OUT1 = 3.3 V
OUT2 =1.8 V
4 V < V
-100 µA< I
Falling edge of REF
(1)
Normal mode
Both SMPS, 6 V < Vin < 36 V
6 V < VIN < 36 V,
0 < I
6 V < VIN < 36 V, I
V
4.5 V< V5SW < 5.5 V
0.5 mA < I
LDO FB connected to LDO
LDO5
LDO5
> UVLO
LDO5
Test condition
< 50 mA
LDO
REF
< 5.5 V
< 50 mA
< 100 µA
LDO5
= 20 mA
(1)
,
1.224
0.887
+891
3.94
Min
575
195
390
145
285
110
270
4.9
-4
Electrical characteristics
1.236
0.905
-150
Typ
680
230
460
175
340
135
350
250
330
0.1
5.0
4
1.249
0.004
0.923
+909
Max
0.95
4.13
785
265
530
205
395
160
500
400
5.1
4
1
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Unit
%/V
mV
mV
mV
mV
mA
µA
ns
ns
%
V
V
V
V