MAX8620YETD+T Maxim Integrated Products, MAX8620YETD+T Datasheet - Page 11

• Manufacturer Part Number: MAX8620YETD+T
• Description: IC UPMIC FOR MPU 14-TDFN
• Manufacturer: Maxim Integrated Products

Specifications of MAX8620YETD+T

• Applications: Micro-Power Management Integrated Circuit (UPMIC), DSPs
• Voltage - Input: 2.7 ~ 5.5 V
• Number Of Outputs: 3
• Voltage - Output: 0.6 ~ 3.3 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 14-TDFN Exposed Pad
• Mounting Style: SMD/SMT
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 45 C
• Output Current: 500 mA
• Output Voltage: 0.6 V to 3.3 V
• Supply Current: 115 uA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

A rising edge at HF_PWR generates an internal one-
shot pulse that enables the MAX8620Y for 1.31s (t
HF_PWR remains high after t
reenters shutdown. During t
enabled so the microprocessor (µP) can initialize and
assert a logic-high at PWR_ON. OUT2 enables during
t
HF_PWR is ignored. If PWR_ON remains low after t
expires, the MAX8620Y reenters shutdown.
Table 2. MAX8620Y Power Modes
*A rising edge at HF_PWR initiates a 1.31s one-shot timer. The status of HF_PWR shown in Table 2 indicates whether the one-shot
period has expired as follows:
1 = During t
0 = t
Figure 4. MAX8620Y Power-Supply Sequencing
HF
PWR_ON
HF_PWR
RESET
if EN2 is low. Once PWR_ON is high, the status of
HP
OUT3
OUT1
OUT2
PWR_ON
EN2
has expired
1
1
0
0
0
Hands-Free Enable Input (HF_PWR)
HP
t
SU1
______________________________________________________________________________________
V
THR
t
RP
t
SU2
HF
HF
µPMIC for Microprocessors or DSPs
HF_PWR*
, OUT3 and OUT1 are
expires, the MAX8620Y
X
X
1
1
0
HF
). If
HF
The step-down converter output (OUT3) always powers
up first and powers down last
approximately 70µs after OUT3, and OUT2 powers
approximately 50µs after V
its regulation voltage. When PWR_ON goes low, OUT1
turns off, then OUT2 turns off, then OUT3 turns off 50µs
after PWR_ON goes low.
EN2
50µs
in Portable Equipment
1
0
1
0
X
OUT1 AND OUT3
Disabled
Enabled
Enabled
Enabled
Enabled
Power-Supply Sequencing
OUT1
t
HF
(Figure 4). OUT1 powers
reaches 87% (typ) of
Disabled
Disabled
Disabled
Enabled
Enabled
OUT2
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