AN30180A-PR Panasonic Electronic Components, AN30180A-PR Datasheet - Page 12

• Manufacturer Part Number: AN30180A-PR
• Description: Low Dropout Controllers - LDO Vout 1.15-2.8 1200mA 1Ch Buck DC-DC
• Manufacturer: Panasonic Electronic Components

Specifications of AN30180A-PR

• Rohs: yes
• Input Voltage Max: 5.5 V
• Output Voltage: 1.15 V to 2.8 V
• Output Current: 1.2 A
• Load Regulation: 3.3 %
• Number Of Outputs: 1
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: UBGA-9
• Input Voltage Min: 2.5 V
• Maximum Power Dissipation: 0.148 W
• Minimum Operating Temperature: - 30 C
• Supply Current: 1.8 A

DCDC_ON
1. Power ON / OFF sequence
OPERATION (Continued)
UVLO
VOUT
(1) When the EN pin is set to “High” after the V
(2) When the BGR exceeds its threshold value, the
(3) DCDC_ON is turned on then DC-DC Step Down
(4) After a Soft start timer current limit is set to be
(5) When the EN pin is set to “Low”, the BGR and UVLO
BGR
Note) The characteristics listed below are reference values derived from the design of the IC and are not guaranteed.
EN
V
SS
IN
UVLO is released and the SS(SOFT START)
sequence is enabled.
During soft start the current limit of DC-DC Step
Down Regulator is set to be lower than Normal
current limit
for preventing rush current.
Internal circuit power supply is turned on and wait for
the time determined by internal timer.
Normal current limit.
the BGR start-up.
the set voltage.
Regulator is enabled. VOUT is risen up to reaches
stop operation. The VOUT pin voltage starts to drop
by output discharge resister and load resistance.
(1)(2) (3)
25 μs
(4)
(5)
IN
settles,
12
Output Over-Current Protection (OCP) function and
Short-Circuit Protection (OSP) function
(1) The Over-Current Protection is activated at about
(2) The Short-Circuit Protection function is
(3) The OSP operates intermittently at 2ms-ON,
2. Protection
1.8 A (Typ.).
16ms-OFF intervals.
During the OCP, the output voltage continues to
drop at the specified current.
implemented when the output voltage decreases
and the VFB pin reaches to about 70 % of the
output voltage setting.
OSP
DCDC_ON
SS
IOUT
VOUT
(3)
about 150 mA
Over Current Protection (typ:1.8 A)
Figure : OCP and OSP Operation
(1)
2 ms
(2)
Intermittent
operation area
16 ms
AN30180A
Output current [A]
2 ms
(3)
(2)
(1)
16 ms
Pendency
characteristics
(Ground short
- about 70 % of Vout )
protection detection
1.3 to 2.3 A
(2)
Ver. AEB