PRELIMINARY
CYW43340
16.3 2.5V LDO (LDO2P5)
Table 37. LDO2P5 Specifications
Specification
Notes
Min.
2.9
Typ.
3.6
Max.
4.8
Unit
Input supply voltage
Min= 2.52+0.15=2.67V
V
Dropout voltage requirement must be met under the maximum load
for performance specifications.
Output current
–
–
–
70
mA
V
Output voltage, Vo
Dropout voltage
default = 2.52V
2.4
2.52
3.4
150
+5
at max load
mV
%
Output voltage DC
Accuracy
include Line/Load regulation
–5
Quiescent current
No load
–
8
–
µA
Line regulation
Vin from (Vo + 0.15V) to 4.8V, maximum load
–11
11
31
mV
mV
Load Regulation
Load from 1–70 mA (subject to parasitic resistance of package and –
board). Vin = 2.52 + 0.15V to 4.8V
15
Leakage current
PSRR
Powerdown mode. At Junction Temp 85°C
–
–
–
5
–
µA
dB
VBAT ≥ 3.6V, Vo = 2.52V, Co = 2.2 µF,
maximum load, 100 Hz to 100 kHz
20
LDO turn-on time
LDO turn-on time when rest of chip is up
–
–
–
–
260
100
µs
In-rush current during
turn-on
from its output capacitor in fully-discharged state
mA
External output
capacitor, Co
Ceramic, X5R, 0402,
(ESR: 5m-240mohm), ±20%, 6.3V
0.7a
–
2.2
1
2.64
–
µF
µF
External input capacitor For SR_VDDBATA5V pin (shared with Bandgap) ceramic, X5R,
0402, ±10%, 10V. Not needed if sharing the VBAT capacitor 4.7 µF
with SR_VDDBATP5V.
a.Minimum cap value refers to residual cap value after taking into account part–to–part tolerance, DC–bias, temperature, aging
16.4 HSICDVDD LDO
Table 38. HISCDVDD LDO Specifications
Specification
Input supply voltage
Notes
Min
1.3
Typ
1.35
Max
1.5
Units
Min = 1.2V + 0.1V = 1.3V.
V
Dropout voltage requirement must be met
under maximum load for performance specifi-
cations.
Output current
–
–
–
80
mA
V
Output voltage, Vo
Dropout voltage
Step size 25 mV. Default = 1.2V.
1.1
–
1.2
–
1.275
100
At maximum load. Includes 100 mΩ routing
mV
resistors at input and output.
Output voltage DC accuracy
Quiescent current
Including line/load regulation.
–4
–
–
4
–
%
No load. Dependent on programming.
ldo_cntl_i[43], ldo_cntl_i[41] to support
different external capacitor loads.
182
µA
PSRR at 1 kHz
Input ≥ 1.35V, 50 to 300 pF, Vo = 1.2V
Load: 80 mA
Load: 40 mA
–
–
24
39
dB
dB
Document Number: 002-14943 Rev. *L
Page 79 of 96
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